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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Ferromagnetic resonance linewidth in metallic thin films: Comparison of measurement methods | NIST
Sangita S. Kalarickal,Pavol Krivosik,Mingzhong Wu,Carl E. Patton,Michael Schneider,Pavel Kabos,Thomas J. Silva,John P. Nibarger +7 more
TL;DR: In this article, the linewidth of a series of Permalloy films with thicknesses of 50 and 100nm was measured using linear function of frequency, with a slope that corresponds to a nominal Landau-Lifshitz phenomenological damping parameter α value of 0.007 and zero frequency intercepts in the 160-320A∕m (2-4Oe) range.
Journal ArticleDOI
Equiatomic quaternary Heusler alloys: A material perspective for spintronic applications
Lakhan Bainsla,K. G. Suresh +1 more
TL;DR: In this paper, a quaternary Heusler structure with different structural symmetries (space group F-43m, #216) was obtained for half-metallic ferromagnetic (HMF) materials.
Journal ArticleDOI
The 2020 magnetism roadmap
E. Y. Vedmedenko,Roland Kawakami,Denis D. Sheka,Pietro Gambardella,Andrei Kirilyuk,Atsufumi Hirohata,Ch. Binek,Oksana Chubykalo-Fesenko,Stefano Sanvito,Brian J. Kirby,Julie Grollier,Karin Everschor-Sitte,Tobias Kampfrath,Tobias Kampfrath,Chun-Yeol You,Andreas Berger +15 more
TL;DR: The very relevant advances in the field of magnetism research during the past years make yet another Magnetism Roadmap a very sensible and timely endeavour, and allow its authors and readers to take another broad-based, but concise look at the most significant developments in magnetism.
Posted Content
Equiatomic quaternary Heusler alloys: a material perspective for spintronic applications
Lakhan Bainsla,K. G. Suresh +1 more
TL;DR: In this paper, a quaternary Heusler structure with different structural symmetry is obtained for half-metallic ferromagnetic (HMF) alloys with the stoichiometric composition X2YZ, where X and Y are transition metals and Z is a sp element.
Journal ArticleDOI
Heusler alloys for spintronic devices: review on recent development and future perspectives
Kelvin Elphick,William James Frost,Marjan Samiepour,Takahide Kubota,Koki Takanashi,Hiroaki Sukegawa,Seiji Mitani,Seiji Mitani,Atsufumi Hirohata +8 more
TL;DR: Heusler alloys are theoretically predicted to become half-metals at room temperature (RT) and by employing these ferromagnetic alloy films in a spintronic device, efficient spin injection into a non-magnetic material and large magnetoresistance are also discussed.
References
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Structural characterization of the Co2FeZ (Z=Al, Si, Ga, and Ge) Heusler compounds by x-ray diffraction and extended x-ray absorption fine structure spectroscopy
Benjamin Balke,Sabine Wurmehl,Gerhard H. Fecher,Claudia Felser,Maria do Carmo Martins Alves,Fabiano Bernardi,Jonder Morais +6 more
TL;DR: In this article, the structure of Fe containing, Co2-based Heusler compounds that are suitable for magnetoelectronic applications was investigated using the x-ray diffraction (XRD) and extended xray absorption fine structure (EXAFS) techniques.
Journal ArticleDOI
Large magnetoresistance in current-perpendicular-to-plane pseudospin valve using a Co2Fe(Ge0.5Ga0.5) Heusler alloy
Yukiko Takahashi,A. Srinivasan,B. Varaprasad,A. Rajanikanth,N. Hase,Tomoya Nakatani,Shinya Kasai,Takao Furubayashi,Kazuhiro Hono,Kazuhiro Hono +9 more
TL;DR: Using a newly developed highly spin-polarized Heusler alloy, Co2Fe(Ga05Ge05) (CFGG), as ferromagnetic layers, a current-perpendicular-to-plane pseudospin valve with large resistance change-area product (ΔRA) of 95mΩμm2 and magnetoresistance (MR) ratio (100×ΔR/R) of 417% at 300 K were fabricated in this paper.
Journal ArticleDOI
Role of electron scattering in the magnetization relaxation of thin Ni 81 Fe 19 films
Snorri Ingvarsson,Snorri Ingvarsson,Lance Ritchie,Xiaoyong Liu,Gang Xiao,J. C. Slonczewski,Philip L. Trouilloud,Roger H. Koch +7 more
TL;DR: In this paper, a strong correlation between magnetization relaxation and electrical resistivity in thin Permalloy films was observed, where phonon scattering in bulk is replaced by surface and defect scattering in thin films.
Journal ArticleDOI
All-metallic lateral spin valves using Co2Fe(Ge0.5Ga0.5) Heusler alloy with a large spin signal
Yukiko Takahashi,Shinya Kasai,Shigeyuki Hirayama,Seiji Mitani,Seiji Mitani,Kazuhiro Hono,Kazuhiro Hono +6 more
TL;DR: In this article, a large spin signal (ΔRs) of 12.8mΩ at room temperature is demonstrated in an all-metallic lateral spin valve (LSV) device comprising of ferromagnetic wire of a highly spin-polarized Co2Fe(Ge 0.5Ga0.5) Heusler alloy and a Cu wire.
Journal ArticleDOI
The magnetic and transport properties of the Co2FeGa Heusler alloy
TL;DR: In this article, the magnetic and transport properties of the Co2FeGaGa Heusler alloy have been investigated and the results show that the temperature dependence of the magnetization follows the spin-wave behaviour at low temperature.