Journal ArticleDOI
Spin polarization and Gilbert damping of Co2Fe(GaxGe1−x) Heusler alloys
B. S. D. Ch. S. Varaprasad,Ashok Srinivasan,Ashok Srinivasan,Yukiko Takahashi,Masamitsu Hayashi,A. Rajanikanth,Kazuhiro Hono +6 more
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TLDR
The spin polarization of ferromagnetic Heusler alloys, Co 2 Fe(Ga x Ge 1−x ) ( x ǫ = 0, 0.75, and 1), is investigated by point contact Andreev reflection (PCAR) measurements as discussed by the authors.About:
This article is published in Acta Materialia.The article was published on 2012-10-01. It has received 105 citations till now. The article focuses on the topics: Half-metal & Spin polarization.read more
Citations
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Structure and magnetoresistance of current-perpendicular-to-plane pseudo spin valves using Co2Mn(Ga0.25Ge0.75) Heusler alloy
Yukiko Takahashi,N. Hase,N. Hase,Masaya Kodzuka,Masaya Kodzuka,A. Itoh,A. Itoh,T. Koganezawa,Takao Furubayashi,Songtian Li,B. S. D. Ch. S. Varaprasad,Tadakatsu Ohkubo,Tadakatsu Ohkubo,Kazuhiro Hono,Kazuhiro Hono +14 more
TL;DR: In this paper, the structure and magnetoresistance of a CPP-GMR pseudo spin valve was investigated using Co2Mn(Ga0.25Ge0.75) (CMGG) Heusler alloy ferromagnetic layers annealed at different temperatures.
Journal ArticleDOI
Structural stability, electronic and magnetic behaviour of spin-polarized YCoVZ (Z = Si, Ge) and YCoTiZ (Z = Si, Ge) Heusler alloys
TL;DR: The structural stability, electronic and magnetic behaviour of quaternary Heusler alloys have been studied by first principle approach in this article, where generalized gradient approximation (GGA) based on density functional theory (DFT) has been applied to investigate the properties.
Journal ArticleDOI
001 textured polycrystalline current-perpendicular-to-plane pseudo spin-valves using Co2Fe(Ga0.5Ge0.5) Heusler alloy
Ye Du,Ye Du,B. S. D. Ch. S. Varaprasad,Yukiko Takahashi,Takao Furubayashi,Kazuhiro Hono,Kazuhiro Hono +6 more
TL;DR: In this article, the orientation dependence of current-perpendicular-to-plane giant-magnetoresistance (CPP-GMR) was investigated by fabricating textured polycrystalline pseudo spin valves (PSVs) with Co2Fe(Ga0.5Ge 0.5) (CFGG) Heusler alloy ferromagnetic layers and a Ag spacer.
Journal ArticleDOI
Spin polarization studies in half-metallic Co2TiX (X = Ge and Sn) Heusler alloys
Lakhan Bainsla,K.G. Suresh +1 more
TL;DR: In this paper, structural, magnetic and spin polarization measurements were carried out on Co 2 TiX (X = Ge, Sn) Heusler alloys to probe the half-metallic nature.
Journal ArticleDOI
Reduction of critical current density for out-of-plane mode oscillation in a mag-flip spin torque oscillator using highly spin-polarized Co2Fe(Ga0.5Ge0.5) spin injection layer
S. Bosu,Hossein Sepehri-Amin,Yuya Sakuraba,Masamitsu Hayashi,Claas Abert,Dieter Suess,Thomas Schrefl,Kazuhiro Hono +7 more
TL;DR: In this paper, a spin torque oscillator comprised of a perpendicular spin injection layer (SIL) and a planar field generating layer was used to reveal the influence of spin polarization of SIL material on the critical current density, JC, to induce microwave oscillation.
References
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Journal ArticleDOI
Generalized Gradient Approximation Made Simple
TL;DR: A simple derivation of a simple GGA is presented, in which all parameters (other than those in LSD) are fundamental constants, and only general features of the detailed construction underlying the Perdew-Wang 1991 (PW91) GGA are invoked.
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Electron-energy-loss spectra and the structural stability of nickel oxide: An LSDA+U study
Sergei L. Dudarev,Gianluigi A. Botton,Sergey Y. Savrasov,Colin J. Humphreys,Adrian P. Sutton +4 more
TL;DR: In this article, the authors improved the description of both electron energy loss spectra and parameters characterizing the structural stability of the material compared with local spin density functional theory by taking better account of electron correlations in the $3d$ shell of metal ions in nickel oxide.
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New Class of Materials: Half-Metallic Ferromagnets
TL;DR: The band structure of Mn-based Heusler alloys of the crystal structure (MgAgAs type) has been calculated with the augmented-spherical-wave method.
Journal Article
On the Theory of Ferromagnetic Resonance Absorption
TL;DR: The theory of ferromagnetic resonance absorption was extended in this paper to include the effect of the shape of the specimen and, in the case of a single crystal, of crystal orientation.
Journal ArticleDOI
Slater-Pauling behavior and origin of the half-metallicity of the full-Heusler alloys
TL;DR: In this article, the full-potential screened Korringa-Kohn-Rostoker method was used to study the half-metallic properties of Co, Fe, Rh, and Ru.