High spin polarization in CoFeMnGe equiatomic quaternary Heusler alloy

Lakhan Bainsla, K. G. Suresh*, A. K. Nigam, M. Manivel Raja, B. S.D.Ch S. Varaprasad, Y. K. Takahashi, K. Hono

*この研究の対応する著者

研究成果: Article査読

84 被引用数 (Scopus)

抄録

We report the structure, magnetic property, and spin polarization of CoFeMnGe equiatomic quaternary Heusler alloy. The alloy was found to crystallize in the cubic Heusler structure (prototype LiMgPdSn) with considerable amount of DO3 disorder. Thermal analysis result indicated the Curie temperature is about 750K without any other phase transformation up to melting temperature. The magnetization value was close to that predicted by the Slater-Pauling curve. Current spin polarization of P = 0.70 ± 0.01 was deduced using point contact andreev reflection measurements. The temperature dependence of electrical resistivity has been fitted in the temperature range of 5-300K in order to check for the half metallic behavior. Considering the high spin polarization and Curie temperature, this material appears to be promising for spintronic applications.

本文言語English
論文番号203902
ジャーナルJournal of Applied Physics
116
20
DOI
出版ステータスPublished - 2014 11 28
外部発表はい

ASJC Scopus subject areas

  • 物理学および天文学(全般)

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