High Spin Polarization And Spin Splitting In Equiatomic Quaternary Cofecral Heusler Alloy

dc.creatorBainsla
dc.creatorLakhan; Mallick
dc.creatorA. I.; Coelho
dc.creatorA. A.; Nigam
dc.creatorA. K.; Varaprasad
dc.creatorB. S. D. Ch. S.; Takahashi
dc.creatorY. K.; Alam
dc.creatorAftab; Suresh
dc.creatorK. G.; Hono
dc.creatorK.
dc.date2015-Nov
dc.date2016-06-07T13:16:36Z
dc.date2016-06-07T13:16:36Z
dc.date.accessioned2018-03-29T01:37:13Z
dc.date.available2018-03-29T01:37:13Z
dc.identifier
dc.identifierHigh Spin Polarization And Spin Splitting In Equiatomic Quaternary Cofecral Heusler Alloy. Elsevier Science Bv, v. 394, p. 82-86 Nov-2015.
dc.identifier0304-8853
dc.identifierWOS:000360025800014
dc.identifier10.1016/j.jmmm.2015.05.095
dc.identifierhttp://www.sciencedirect.com/science/article/pii/S0304885315302080
dc.identifierhttp://repositorio.unicamp.br/jspui/handle/REPOSIP/242129
dc.identifier.urihttp://repositorioslatinoamericanos.uchile.cl/handle/2250/1305827
dc.descriptionIn this paper, we investigate CoFeCrAl alloy by means of ab-initio electronic structure calculations and various experimental techniques. The alloy is found to exist in the B2-type cubic Heusler structure, which is very similar to Y-type (or LiMgPdSn prototype) structure with space group F-43m (#216). Saturation magnetization (M-S) of about 2 mu(B)/f.u. is observed at 8 K under ambient pressure, which is in good agreement with the Slater-Pauling rule. M-S values are found to be independent of pressure, which is a prerequisite for half-metals. The ab-initio electronic structure calculations predict half-metallicity for the alloy with a spin slitting energy of 0.31 eV. Importantly, this system shows a high current spin polarization value of 0.67 +/- 0.02, as deduced from the point contact Andreev reflection measurements. Linear dependence of electrical resistivity with temperature indicates the possibility of reasonably high spin polarization at elevated temperatures (similar to 150 K) as well. All these suggest that CoFeCrAl is a promising material for the spintronic devices. (C) 2015 Elsevier B.V. All rights reserved.
dc.description394
dc.description
dc.description
dc.description82
dc.description86
dc.descriptionUGC, Government of India
dc.descriptionTAP fellowship under SEED Grant [13IRCCSG020]
dc.description
dc.description
dc.description
dc.languageen
dc.publisherELSEVIER SCIENCE BV
dc.publisher
dc.publisherAMSTERDAM
dc.relationJOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
dc.rightsembargo
dc.sourceWOS
dc.subjectMagnetic-properties
dc.subjectFerromagnets
dc.titleHigh Spin Polarization And Spin Splitting In Equiatomic Quaternary Cofecral Heusler Alloy
dc.typeArtículos de revistas


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