Current-perpendicular-to-plane giant magnetoresistance in pseudo spin valves with Co2Fe(Ge0.5Ga0.5) heusler alloy ferromagnetic layers and Cu/Ag spacer

S. Li, H. S. Goripati, Y. K. Takahashi, T. Furubayashi, K. Hono*

*この研究の対応する著者

研究成果: Article査読

5 被引用数 (Scopus)

抄録

We studied the transport properties and micro-structure of current-perpendicular-to-plane pseudo spin valves (PSVs) with ferromagnetic Co2Fe}(Ge0.5Ga0.5) (CFGG) Heusler alloy layers and a Cu or Ag spacer. The CFGG/Cu/CFGG PSVs showed an optimum annealing temperature at 300°C, which is substantially lower than 500°C for CFGG/Ag/CFGG PSVs. The Valet-Fert analysis yielded comparable interfacial spin asymmetries in CFGG/Cu (or Ag)/CFGG PSVs, which indicates that the Cu spacer has as good a band matching as that of the Ag spacer with the CFGG Heusler alloy. However, transmission electron microscopy observation revealed that the CFGG/Cu/CFGG tri-layered structure is thermally unstable compared to the CFGG/Ag/CFGG tri-layered structure, thus placing a limit on the annealing temperature for producing higher magnetoresistance output by using the Cu spacer.

本文言語English
論文番号6558963
ページ(範囲)4413-4416
ページ数4
ジャーナルIEEE Transactions on Magnetics
49
7
DOI
出版ステータスPublished - 2013
外部発表はい

ASJC Scopus subject areas

  • 電子材料、光学材料、および磁性材料
  • 電子工学および電気工学

フィンガープリント

「Current-perpendicular-to-plane giant magnetoresistance in pseudo spin valves with Co<sub>2</sub>Fe(Ge<sub>0.5</sub>Ga<sub>0.5</sub>) heusler alloy ferromagnetic layers and Cu/Ag spacer」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。

引用スタイル