First-principles Study of Spin Transport in Si-C Nanotube

First-principles Study of Spin Transport in Si-C Nanotube First-principles study of spin transport in Si-C nanotube with ferromagnetic contacts Surendra Jalu Abstract  Ã¢â‚¬â€ We perform first-principles calculations of spin-dependent quantum transport in a two-probe device, viz. Fe-SiCNT-Fe device in which (8,0) Si-C nanotube is sandwiched between two Fe electrodes. Substantial tunnel magnetoresistance and perfect spin filtration effect are obtained. The zero bias tunnel magnetoresistance is found to be several hundred percent, it reduces monotonically till the bias voltage 0.4 V, sees marginal increase at the bias of 0.6 V, and eventually goes to nearly zero after the bias voltage of about 1 V. The spin injection factor is 100% at the zero bias, it reduces sharply to 57% at the bias of 0.4 V, and remains reasonably high, in the range of 60%-75%, after the bias voltage of 0.6 V when the magnetic configurations of two electrodes are parallel. The spin-dependent non-equilibrium transport features can be understood by analyzing microscopic details of the transmission coeà ¯Ã‚ ¬Ã†â€™cients. Keywords — First-principles; Tunnel magnetoresistance(TMR); Spin injection; One-dimensional; Spin filter I. Introduction Si-C crystals have unique properties, including thermal stability, chemical inertness, high thermal conductivity, and others. These properties make Si-C materials an appropriate candidate for fabricating electronic devices operating in high power, high temperature environments. Recently synthesized Si-C nanometer materials, such as nanorods, nanowires and nanotubes, have attracted tremendous interest (1-4). These materials obviously broadened the application range of the Si-C crystals, especially in fabricating nanometer gas sensors, electronic devices, field emitters and other novel devices. Silicon carbide nanotubes have a great potential for application in chemical and biological sensors (Taguchia et al 2005a; Xie et al 2007). Recently, scientists have suggested to make silicon carbide nanotubes (SiCNTs) as a possible alternative to carbon nanotubes (CNTs) for field emitting applications (Taguchia et al 2005b; Alfieri and Kimoto 2010), which has boosted the interest for SiCNTs and several studies on the electronic properties of SiCNTs can be found in the literature (Mavrandonakis et al 2003; Mpourmpakis et al 2006; Larina et al 2007; Muralidharan et al 2007; Wu and Guo 2007; Lakshmi et al 2008; Moradian et al 2008; Raidongia et al 2008; Voggu et al 2008; Wu et al 2008; Manna and Pati 2010; Zheng et al 2010). It is well known that CNTs undergo a semiconductor to metal transition (SMT) (Ren et al 2009) or metal to semiconductor transition (MST) (Lu et al 2003) when deformed. Therefore, it is of interest to understand how the semiconducting (8,0) SiCNT would behave when i t is brought in contact with ferromagnetic electrodes. On account of important applications in magnetoresistive random access memory [1], programmable logic elements [2] and magnetic sensors, the giant magnetoresistance (GMR) and tunnel magnetoresistance (TMR) effects in systems with spin-polarized transport are at the heart of spintronics [3] and attract many theoretical and experimental investigations. A basic magnetic tunnel junction (MTJ) device consists of tunnel barrier separating two ferromagnetic (FM) layers which play the role of device leads. During a tunneling process, the spin-up and spin-down electrons from the metal layers traverse the nonmagnetic tunnel barrier with different Fermi wave function due to electronic structure of the ferromagnetic material. The electrical resistance of MTJ is therefore sensitive to the relative orientation of the magnetic configuration of the electrodes, resulting to a TMR [4]. Hence, the MTJs behave as spin valves [4–8]. It is possible to control the orientation of magnetic moments by imposing an external magnetic field in experiments [9,10]. It is important to note that, MgO-based MTJ has progressed at a rapid pace in recent years and produced the highest measured TMR at room temperature. When the electrodes and the tunnel barrier are all one-dimensional (1D) materials such as nanowires or nanotubes, it is experimentally feasible to achieve MTJ at the 1D scale. It is worth mentioning that Wang et al. [12] construct a 1D TMJ using Fe-doped carbon nanotubes and theoretically investigate its spin-dependent transport properties. What is a pity that, the zero bias magnetoresistance ratio is only ∠¼ 40%, which may restrict the spintronics applications in nanodevices where the large magnetoresistance ratio is desirable. Here, we theoretically investigate the spin-polarized transport of a 1D MTJ constructed by (8,0) SiCNT in contact with FM(Fe) electrodes. It is observed that (8,0) SiCNTs are semiconducting and we believe that it can be used as a tunnel barrier for 1D or molecular-scaled MTJ. In our work, We have chosen (8,0) SiCNT as the tunnel barrier and two semi-infinite FM materials, namely Fe, as electrodes. Significant TMR and perfect spin filtration effect are obt ained according to the first-principles calculations of spin-polarized quantum transport by adopting non-equilibrium Green’s function method combined with density-functional theory. TMR has already led to the construction of the present generation of magnetic data storage devices. However, in order to reach storage densities of the order of Terabit/inch2, a substantial down-scaling of the read/write devices is extensively expected. Such 1D MTJ and spin filter with diameter less than 1 nm may realize the storage densities of the order of Terabit/inch2 and hold promise for extensive spintronics applications of nanodevices. II. Model and method Our investigation is based on a recently developed self-consistent first-principles technique which combines the Keldysh non-equilibrium Green’s-function formalism (NEGF) with a self-consistent density-functional theory (DFT). The package we use is the Atomistix Toolkit [20], which incorporates the NEGF technique into the well tested SIESTA method [21] to realize the simulation of electrical or spin-polarized quantum transport in the molecular conductors under non-equilibrium situations. In the calculation, the local density approximation (LDA) in the form of the Perdew and Zunger [22] (perdew burke ernzerhof) exchange-correlation functional is used. Only valence electrons are self-consistently calculated, and the atomic cores are described by standard norm conserving pseudopotential [23]. The valence wave functions are expanded by the localized numerical (pseudo) atom orbitals [24]. The k-points sampling is 3, 3, and 200 in the x, y, and z direction, which has been proven to be enough to give the converged results. The convergence criterion for the Hamiltonian, charge density, and band-structure energy is 10-5 via the mixture of the Hamiltonian. The positions of C and Fe atoms at the interface of the device are relaxed until the force tolerance 0.05 eV/Ã… is achieved. The spin-current (spin-polarized charge current) is calculated [25] as I↑(↓) = e/h ∠« T↑(↓)(E, Vb) [F(E − ÃŽ ¼L) – F(E −  µR)] dE [R] Where F is the Fermi–Dirac distribution, ÃŽ ¼L and ÃŽ ¼R are the chemical potentials of left-electrode (L) and right-electrode (R) respectively, T↑(↓)(E, Vb) is the transmission coeà ¯Ã‚ ¬Ã†â€™cient for spin channel ( ↑ , ↓ ) at the energy E and bias voltage Vb. While building SiCNT, it is utterly important to use optimum bond-length between Si and C atoms to obtain correct results which in our case, as mentioned in various literatures, is 1.78 Ã…. We couldn’t find the optimum bond-length between C and Fe atoms in literature but we were able to optimize a geometry that consisted of only a few atoms of Fe and C and this way we found the optimum bond-length between Fe and C atoms to be 2.04 Ã… (Fig. 4 (b)). The whole system (Fig. R) is divided into three parts from left to right in practical theoretical simulations: the left electrode, the central scattering region, and the right electrode. The left electrode and right electrode are exactly the same and are made of Fe atoms. Si-C nanotube acts as central scattering region between two electrodes. The whole structure contains 328 atoms (192 Fe, 72 C, 64 Si). 4 (a) 4 (b) Fig. 4(a) Fe-C bond-lengths in non-optimized geometry 4(b) Fe-C bond lengths in optimized geometry Fig. 4(c) Fe-SiCNT-Fe device III. results and discussions Fig. 2(a) and (b) plot the current–voltage (I–V) characteristics for the parallel magnetization configuration (PC) and the antiparallel magnetization configuration (APC) of the two electrodes, respectively. In the case of PC, the spin-up current (I↑) are always much larger than the spin-up current (I↓). The I↑ increases steeply with bias voltage especially after the bias of 0.8 V while on the other hand I↓ is almost negligibly small compared to I↑ at almost all bias voltages. The total equilibrium conductance of 0.0022G0 is found at zero bias, where G0 is the conductance quanta, G0 = 2e2/h. In the case of APC, I↑ and I↓ have almost the same values at all bias voltages. The total equilibrium conductance of 0.0095G0 is found at zero bias. From the I–V curves, we infer a TMR ratio using the common definition: TMR = (IAPC − IPC)/IAPC, where IPC and IAPC are the total currents in PC and APC, respectively. At Vb = 0 when all currents vanish, we calculate TMR using equilibrium conductance. Fig. 2(c) shows the TMR, where the RTMR ∠¼ 322% at zero bias is obtained, which indicate in the perfect tunneling magnetoresistance effect. It sharply decreases to ~ 80% at the bias voltage of 0.4 V, sees slight increase at the bias voltage of 0.6 V and gets reduced to almost zero after the bias voltage of 1 V. The TMR decrease with bias voltages because IPC increases at higher rate with bias voltages than IAPC. It is possible for TMR to assume negative value but in our case no such behavior is observed. The device structure presented here indeed has substantial TMR and could be utilized for spintronics applications. The spin-injection factor ÃŽ · which is defined by spin currents: ÃŽ · = mod(I↑ I↓) / (I↑ + I↓) are plotted in Fig. 2(d). At the bias voltage of 0.0 V, the current is 0 A and hence we use the equilibrium conductance represent current. For the case of PC, ÃŽ · is 99% at the zero bias, it monotonically reduces to 57% at the bias voltage of 0.4 and it increases and remains fairly within large values once the bias voltage goes beyond 0.4 V. The spin-injection factor ÃŽ · is as large as ~73% at the bias of 1.2 V and may even improve at higher bias voltages. For the case of APC, the ÃŽ · is meager ~49% at the zero bias. It’s dramatic that it reaches ~85% at the bias voltage of 0.2 V but then it keeps reducing with increase in bias voltages and attains very negligible values at the bias of about 1 V to 1.2 V. From Fig.R it is observed that in the case of PC the spin filtration effect manifests itself very clearly when the bias is above 0.4 V while in the case of APC no such effect is seen. The source of this behavior maybe originates from the quantum size effect which results in the quantized subbands in the cross section of 1D electrode. Detailed analysis is in the below. Spin injection into semiconductors has been measured experimentally using the optical techniques [26,27]. Such 1D TMJ contr olled spin injection into semiconductors should occur in devices that are smaller than a spin relaxation length in extent and have resistance that is limited by the insulating BNNT. The voltage dependent of spin current, TMR ratio and spin-injection factor can be understood from the behavior of the transmission coeà ¯Ã‚ ¬Ã†â€™cients [ T (E, Vb) ] , since the current is essentially given by the energy integral of the T (E, Vb) over the bias window [see Eq. (1)]. The T (E, Vb) for several bias are shown in Fig. 3, where the (a) and (b) are spin-up and spin- down channel of PC setup respectively and the (c) and (d) are spin-up and spin-down channel of APC setup respectively. For both PC and APC setup, these bias-depended T(E,Vb) have several sharp peaks especially after the bias of 0.35 V, due to quantized subbands in the cross section of the 1D electrodes, already mentioned above. The spin up channel contribute to the T(E,Vb) above the Fermi level and spin-down channel contribute both above and below the Fermi level. Refer to the notation from molecular transport theory [28] we can deduce that the spin-up channel conductance is through the lowest unoccupied molecular orbital (LUMO) while the spin-down channel conductance is through both the highest occupied molecular orbital (HOMO) and LUMO of pristine (6,0) BNNT in scattering region. From Fig. 3(a), one can see that the T (E, Vb) shifts to high energy but roughly maintains its shape when bias increases. The T (E, Vb) are all almost absolutely inhibited in spin-up channels around Fermi level, while in the spin-down channel the T (E, Vb) is smooth and several orders of magnitude larger than in spin-up channel around Fermi level. This is why the I↓ linearly increases while the I↑ is inhibited under the bias of 0.75 V, already discussed above for Fig. 2(a). As the bias increases, the electrochemical potential in the left electrode (ÃŽ ¼L) is shifted down, and that in the right electrode (ÃŽ ¼R) is shifted up. Hence, the bands in the two electrodes are shifted correspondingly [29–32]. When the bias increase beyond 0.75 V, a little resonance states A1 are induced around Fermi level showed in Fig. 3(a) for the bias of 0.75, 0.95 and 1.15 V, which originate from the alignment of the LUMO of left electrode with the HOMO of right electrode in spin-up channel because the bands in the two electrodes are shifted. These resonance states significantly enhance as bias increasing, which result in the rapid increase about I↑ after the bias of 0.75 V. Consequently, the rapid increase of I↑ also leads to the rapid decrease about ÃŽ · for PC setup after 0.75 V, already discussed above for Fig. 2(c). The bias dependent T (E, Vb) for APC setup are more complex than PC setup. From Fig. 3(c), one can see that the T (E, Vb) in spin-up channel roughly maintains its shape when bias increases. A little resonance states A2 below Fermi level, which presents for the bias of 0.00 and 0.15 V are removed after the bias of 0.15 V. As the bias increase, only a little resonance states above the Fermi level enter to the transport window (i.e., the part of transmission function in the bias window integrated to obtain the current) and contribute to the I↑, which result in very slow increase of the I↑. After the bias of 0.15 V, the T (E, Vb) shifts to larger energy and large resonance states are induced around Fermi level due to the alignment of spin-down states around Fermi level of left electrode with HOMO of right electrode in spin-down channel because the bands in the two electrodes are shifted. These induced resonance states continuously enhance as bias increase, which result in r apid increase of I↓. Eventually, the total current for APC setup exceed PC setup after the bias of 0.75 V, result in negative RTMR, already discussed above for Fig. 2(c). As mentioned above, the quantum size effect leads to the quantized subbands in the cross section of 1D electrode. Hence, there are two peaks in the induced resonance states around Fermi level after the bias of 0.35 V, showed in Fig. 3(d). When T (E, Vb) continuously shifts to higher energies, these two peaks pass the Fermi level one by one, which cause the oscillation about the spin-down conductance. Thus, the spin injection factor ÃŽ · is oscillating with bias in the APC setup. IV. conclusion We theoretically investigate the spin-polarized transport properties of V atoms doped (6,0) single-wall BNNT using non-equilibrium Green’s-function formalism with a self-consistent density- functional theory. The RTMR is as high as 789% at the bias of 0.05 V. It decays to zero and eventually to negative values when bias is increased. The ratio of spin injection is not below 99% until the bias of 0.55 V when the magnetic configurations of two electrodes are parallel. When the magnetic configurations of two electrodes are antiparallel, the ratio of spin injection oscillates with the bias. Our calculations indicate that it could design perfect 1D MTJs and spin filter using TMs doped BNNTs. The perfect TMR effect and spin filter effect are obtained. References The template will number citations consecutively within brackets [1]. The sentence punctuation follows the bracket [2]. Refer simply to the reference number, as in [3]—do not use â€Å"Ref. [3]† or â€Å"reference [3]† except at the beginning of a sentence: â€Å"Reference [3] was the first † Number footnotes separately in superscripts. Place the actual footnote at the bottom of the column in which it was cited. Do not put footnotes in the reference list. Use letters for table footnotes. Unless there are six authors or more give all authors’ names; do not use â€Å"et al.†. Papers that have not been published, even if they have been submitted for publication, should be cited as â€Å"unpublished† [4]. Papers that have been accepted for publication should be cited as â€Å"in press† [5]. Capitalize only the first word in a paper title, except for proper nouns and element symbols. For papers published in translation journals, please give the English citation first, followed by the original foreign-language citation [6]. G. Eason, B. Noble, and I.N. Sneddon, â€Å"On certain integrals of Lipschitz-Hankel type involving products of Bessel functions,† Phil. Trans. Roy. Soc. London, vol. A247, pp. 529-551, April 1955. (references) J. Clerk Maxwell, A Treatise on Electricity and Magnetism, 3rd ed., vol. 2. Oxford: Clarendon, 1892, pp.68-73. I.S. Jacobs and C.P. Bean, â€Å"Fine particles, thin films and exchange anisotropy,† in Magnetism, vol. III, G.T. Rado and H. Suhl, Eds. New York: Academic, 1963, pp. 271-350. K. Elissa, â€Å"Title of paper if known,† unpublished. R. Nicole, â€Å"Title of paper with only first word capitalized,† J. Name Stand. Abbrev., in press. Y. Yorozu, M. Hirano, K. Oka, and Y. Tagawa, â€Å"Electron spectroscopy studies on magneto-optical media and plastic substrate interface,† IEEE Transl. J. Magn. Japan, vol. 2, pp. 740-741, August 1987 [Digests 9th Annual Conf. Magnetics Japan, p. 301, 1982]. M. Young, The Technical Writer’s Handbook. Mill Valley, CA: University Science, 1989.

Betty Ford Case Study

In the study of abnormal behavior it is found to be behavior observed through others individuals, this failed to be observed within self. The capability of recognizing the living aspects, emotional, cognitive and the behavioral part of behavior needed initially in the steps to recognize the purpose associated in behavior. In this case study of Betty Ford, she was an individual that struggled with a form of abnormal behavior along with the ability to recognize it with the assistance of other individuals to be able to notice she made a difference in her life.In this case study, it will explain the aspects of her life and overview of how she was able to work with assistance in understand the addictive behavior she developed over time and beat the odds of becoming sober. Biological Components Unfortunately, Betty grew up as the daughter of alcoholics this was the platform that lead to her alcoholism predisposition that was biological. Unaware she was going to grow up and have an addictio n of any sort and her father’s hidden alcoholism.His employment kept him away from home a lot oftentimes alcoholics and addicts find it easy to hide their stigmas that are stemmed from a genetic predisposition (Pinel, 2009). Betty was not the only family member that suffered from alcoholism, she later found her brother was afflicted also suffered from the factor that would support this reasoning (Meyer, Chapman & Weaver, 2009). Pertaining to genetic predispositions, an individual do not need to be raised in the same environment of an alcoholic to become afflicted, individuals only have to have the inherited genetic predisposition (Pinel, 2009).Having a genetic predisposition regarding the addiction to alcoholism help set the platform to Betty’s components to alcoholism, along with many other components that allowed the genetic predisposition the ability to work together in Betty’s situation to be considered. Emotional Components The absence of Betty’s fat her doing her childhood affected her emotionally. His absence in her upbringing caused Betty to become deeply attached to her mother, whom as any other mother needing to play both roles of the parents in her home (Meyer, Chapman & Weaver, 2009).Mrs. Ford, Betty’s mother was known as a perfectionist who demanded the same of everyone around her a trait Betty admired so of her mother. When her father died Betty was only 16 years of age, she was able to lean on the strength of her mother to get her through the traumatic ordeal. Following the case study of Betty, the qualities she observed through her mother, she was plagued with the notion of never living up to her, this was the factor that lead to the development of the baseline her addictions.As a young girl growing up Betty never had a drink, but later around the age of eighteen she developed a taste of alcohol as a social drinker. At this time in her life, she explored the modeling and dance industry in New York, the stress o f the life style had an effect on which caused a shift in her self-esteem and emotional status (Meyer, Chapman & Weaver, 2009). This form of exposure was a major gateway into Betty’s path of dependency to alcohol. Betty was thrown into the world of partying at all hours of the night and found her peers at the given time seem to place pressure on drinking more than usual.Once her mother the path of destruction she was falling into her urged Betty to return to Michigan (Meyer, Chapman & Weaver). After returning home six months later, Betty married a gentleman she knew from her childhood (Meyer, Chapman & Weaver). As many marriages, today, it did not take long before it was the end of her marriage. Betty found that her husband was not over the night life and party life style his actions affected her greatly because she was sure she was ready to settle down into a life of marriage and children. It did not take long before Betty met and later married a handsome fellow named, Geral d Ford.Gerald was from a very decent family he was known as one of the most eligible bachelors at the time in Grand Rapids (Meyer, Chapman & Weaver, 2009). Yes, Betty truly was in love, but living the life of politic as the future first lady to the President of the United States was more than she bargained. Feeling lonely and placed aside of all, Betty was emotionally drained (Meyer, Chapman & Weaver). The situation she found herself in had a downward spiral that pushed her over the edge along with the aspect of having the biological trait that lead to her painful addictions.Cognitive and Behavioral Components On the political trail, Betty gave birth four beautiful children, alone and keeping her home intact she found strength from the influence she saw in her mother throughout her childhood. It did not take long for Betty to be overcome with stress of the mental and physical aspect of a politician’s wife and a mother raising four children mostly alone, not to mention she dev eloped a painful situation of a compressed nerve in her (Meyer, Chapman & Weaver, 2009).Due to the compressed nerve condition in her neck Betty was treated with pain medications prescribed to ease her discomfort, unfortunately, this cause another form of addition along with the drinking. Betty was encouraged by her physician to continue her pain medication, unaware of her biological and emotional situation she was already plagued with. No one seem to notice the despair she was in which led to her cognitive and a behavioral substance-related turmoil she began living. Betty began experiencing a sense of emptiness and no self-worth that increased her emotional pain and dependency.Finding herself in a state of denial Betty needed to admit to herself that she had a problem with alcohol and prescription medication. In time, she had to come to grasp with the fact there was something wrong, and she needed to get some assistance before it was (Meyer, Chapman & Weaver, 2009). Taking in consid eration the biological and alcoholism predisposition Betty had to face her substance abuse problems was fore seen an instance that many might say was inevitable without some form of help early on her youth.Sadly with the state of be alone and suffering from the complication in her neck Betty suffered from depression and anxiety (Meyer, Chapman & Weaver, 2009). Through observation and case studies individuals who seem to have situations dealing with the issue of alcoholism are diagnosed with forms of depression and various other disorders associated with the mental status. With all the complications, Betty find herself in she is in harm’s way due to the continued use of alcohol and the prescribed medications (Comer, 2005). ConclusionAs this case study looked at the unfolding of Betty Ford’s life, the understand of what lead to the unfolding of a beautiful woman into a woman riddled with depression, anxiety, alcoholism and a dependency to prescribed medication we needed to begin with the understanding of how it began. The aspect of individual’s genetic predisposition and a childhood flawed in perception her cognitive and a look at her behavioral fundamental conditioning actions associated with her relationship with her mother and peers. In the end, the intervention of her supportive family resulted in a lifesaving gesture that saved her and gave a new outlook in her life. Betty Ford Case Study In the study of abnormal behavior it is found to be behavior observed through others individuals, this failed to be observed within self. The capability of recognizing the living aspects, emotional, cognitive and the behavioral part of behavior needed initially in the steps to recognize the purpose associated in behavior. In this case study of Betty Ford, she was an individual that struggled with a form of abnormal behavior along with the ability to recognize it with the assistance of other individuals to be able to notice she made a difference in her life. In this case study, it will explain the aspects of her life and overview of how she was able to work with assistance in understand the addictive behavior she developed over time and beat the odds of becoming sober.Biological ComponentsUnfortunately, Betty grew up as the daughter of alcoholics this was the platform that lead to her alcoholism predisposition that was biological. Unaware she was going to grow up and have an addiction of any sort and her father’s hidden alcoholism. His employment kept him away from home a lot oftentimes alcoholics and addicts find it easy to hide their stigmas that are stemmed from a genetic predisposition (Pinel, 2009). Betty was not the only family member that suffered from alcoholism, she later found her brother was afflicted also suffered from the factor that would support this reasoning (Meyer, Chapman & Weaver, 2009).Pertaining to genetic predispositions, an individual do not need to be raised in the same environment of an alcoholic to become afflicted, individuals only have to have the inherited genetic predisposition (Pinel, 2009). Having a genetic predisposition regarding the addiction to alcoholism help set the platform to Betty’s components to alcoholism, along with many other components that allowed the genetic predisposition the ability to work together in Betty’s  situation to be considered.Emotional ComponentsThe absence of Betty’s fa ther doing her childhood affected her emotionally. His absence in her upbringing caused Betty to become deeply attached to her mother, whom as any other mother needing to play both roles of the parents in her home (Meyer, Chapman & Weaver, 2009). Mrs. Ford, Betty’s mother was known as a perfectionist who demanded the same of everyone around her a trait Betty admired so of her mother. When her father died Betty was only 16 years of age, she was able to lean on the strength of her mother to get her through the traumatic ordeal. Following the case study of Betty, the qualities she observed through her mother, she was plagued with the notion of never living up to her, this was the factor that lead to the development of the baseline her addictions.As a young girl growing up Betty never had a drink, but later around the age of eighteen she developed a taste of alcohol as a social drinker. At this time in her life, she explored the modeling and dance industry in New York, the stress of the life style had an effect on which caused a shift in her self-esteem and emotional status (Meyer, Chapman & Weaver, 2009). This form of exposure was a major gateway into Betty’s path of dependency to alcohol. Betty was thrown into the world of partying at all hours of the night and found her peers at the given time seem to place pressure on drinking more than usual.Once her mother the path of destruction she was falling into her urged Betty to return to Michigan (Meyer, Chapman & Weaver). After returning home six months later, Betty married a gentleman she knew from her childhood (Meyer, Chapman & Weaver). As many marriages, today, it did not take long before it was the end of her marriage. Betty found that her husband was not over the night life and party life style his actions affected her greatly because she was sure she was ready to settle down into a life of marriage and children. It did not take long before Betty met and later married a handsome fellow named, Ger ald Ford. Gerald was from a very decent family he was known as one of the most eligible bachelors at the time in Grand Rapids (Meyer, Chapman & Weaver, 2009).Yes, Betty truly was in love, but living the life of politic as the future first lady to the President of the United States was more than she bargained. Feeling lonely and placed aside of all, Betty was emotionally drained (Meyer, Chapman &  Weaver). The situation she found herself in had a downward spiral that pushed her over the edge along with the aspect of having the biological trait that lead to her painful addictions. Cognitive and Behavioral ComponentsOn the political trail, Betty gave birth four beautiful children, alone and keeping her home intact she found strength from the influence she saw in her mother throughout her childhood. It did not take long for Betty to be overcome with stress of the mental and physical aspect of a politician’s wife and a mother raising four children mostly alone, not to mention sh e developed a painful situation of a compressed nerve in her (Meyer, Chapman & Weaver, 2009). Due to the compressed nerve condition in her neck Betty was treated with pain medications prescribed to ease her discomfort, unfortunately, this cause another form of addition along with the drinking.Betty was encouraged by her physician to continue her pain medication, unaware of her biological and emotional situation she was already plagued with. No one seem to notice the despair she was in which led to her cognitive and a behavioral substance-related turmoil she began living. Betty began experiencing a sense of emptiness and no self-worth that increased her emotional pain and dependency. Finding herself in a state of denial Betty needed to admit to herself that she had a problem with alcohol and prescription medication. In time, she had to come to grasp with the fact there was something wrong, and she needed to get some assistance before it was (Meyer, Chapman & Weaver, 2009).Taking in c onsideration the biological and alcoholism predisposition Betty had to face her substance abuse problems was fore seen an instance that many might say was inevitable without some form of help early on her youth. Sadly with the state of be alone and suffering from the complication in her neck Betty suffered from depression and anxiety (Meyer, Chapman & Weaver, 2009). Through observation and case studies individuals who seem to have situations dealing with the issue of alcoholism are diagnosed with forms of depression and various other disorders associated with the mental status. With all the complications, Betty find herself in she is in harm’s way due to the continued use of alcohol and the prescribed medications (Comer, 2005).ConclusionAs this case study looked at the unfolding of Betty Ford’s life, the understand of what lead to the unfolding of a beautiful woman into a woman riddled with depression, anxiety, alcoholism and a dependency to prescribed medication we ne eded to begin with the understanding of how it began. The aspect of individual’s genetic predisposition and a childhood flawed in perception her cognitive and a look at her behavioral fundamental conditioning actions associated with her relationship with her mother and peers. In the end, the intervention of her supportive family resulted in a lifesaving gesture that saved her and gave a new outlook in her life.

Rencontrer - French Verb Conjugations

Cooperative Bank A Case of Corporate Restructuring Free Essay Example, 2000 words

Through restructuring, a company is able to reassess its operations and seek the best changes that can bring about a desired change. Restructuring may arise due to changes in ownership or due to extreme financial difficulties that may lead to a given company being bankrupt. Various countries have different bankruptcy laws and refinancing schemes. The success of any given plan should always consider these laws as well as any accounting information about a given industry or market. Cooperative Bank (UK) The global financial crisis experienced during the 2011/2012 period resulted in a weak corporate sector in the United Kingdom as well as many other countries. The weak corporate sector was due to weaker consumer demand as well as a tightening of credit. Since the first economic crisis of 2008/2009, the cooperative bank has had difficulties in maintaining profitability (Cooperative Bank). Over the years, the bank has been slowly having an increasing in losses and has been sinking in debt. In 2012, a restructuring initiative was announced by the bank and several steps have been taken so as to ensure the bank reclaims peak performance and profitability. History The Cooperative Bank (UK) is a public limited company and is both a commercial and retail bank and whose headquarters is in Manchester, U.K. We will write a custom essay sample on Cooperative Bank A Case of Corporate Restructuring or any topic specifically for you Only $17.96 $11.86/pageorder now The bank was created in 1872, but was not a registered company until 1971. The company began as a branch of the Cooperative Wholesale Society but in 1876, it was later reformed and became the CWS bank (Wilkinson & Balmer, 1996). In 1974, the bank was the first bank to offer free banking to consumers who stayed in credit (Graham 2013). The parent company of the bank, the Cooperative Group Limited, combined the bank and the Cooperative Insurance Society into one holding society that was called the Cooperative Financial Services. In 2009, the United Kingdom’s government acquired 43.4% of Lloyds Banking Group, which allowed the Cooperative Bank to enter into talks with the banking Group to buy over 600 of its branches (Goff, 2013). The deal however fell through due to poor economic conditions witnessed in 2012 as well as the beginning of troubles in the bank. In 2012, the bank witnessed massive losses at the end of the financial year. During that year, the bank announced a  £1.5 billion capital shortfall (Wilson, 2012). Financial problems for the bank increased, leading to the bank being taken over by the Bank of England under the Banking Act 2009. After this, several restructuring initiatives were put in place to ensure a smooth transition and a return to profitability.