Structure and transport properties of current-perpendicular-to-plane spin valves using Co2FeAl0.5Si0.5 and Co 2MnSi Heusler alloy electrodes

T. Furubayashi*, K. Kodama, T. M. Nakatani, H. Sukegawa, Y. K. Takahashi, K. Inomata, K. Hono

*この研究の対応する著者

研究成果: Article査読

23 被引用数 (Scopus)

抄録

We report the structure and transport properties of current-perpendicular- to-plane spin valves (CPP SVs) with Co2FeAl0.5Si 0.5 (CFAS) or Co2 MnSi (CMS) Heusler alloy magnetic layers and an Ag or Cu spacer layer. A multilayer stack of sub/Cr/Ag/Heusler/(Ag or Cu)/ Heusler/Co75Fe25/Ir22Mn78/Ru was deposited on a MgO(001) single crystalline substrate by magnetron sputtering. Transmission electron microscopy observations showed epitaxial growth from the substrate to the top Heusler layer. The CPP SV with a CFAS/Ag/CFAS trilayer showed relatively large magnetoresistance (MR) ratios of 12% at room temperature and 31% at 12 K, with monotonous temperature dependence. However, the MR values of the SV with the CMS/Ag/CMS trilayer showed a different temperature dependence with a maximum value of 22% at 100 K. This might be related to the 90° couplings between the two CMS layers.

本文言語English
論文番号113917
ジャーナルJournal of Applied Physics
107
11
DOI
出版ステータスPublished - 2010 6 1
外部発表はい

ASJC Scopus subject areas

  • 物理学および天文学(全般)

フィンガープリント

「Structure and transport properties of current-perpendicular-to-plane spin valves using Co<sub>2</sub>FeA<sub>l0.5</sub>Si<sub>0.5</sub> and Co <sub>2</sub>MnSi Heusler alloy electrodes」の研究トピックを掘り下げます。これらがまとまってユニークなフィンガープリントを構成します。

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