Thermal stability of spin valve with NiO/α-Fe2O3 bilayer antiferromagnets

Junichi Fujikata, Kazuhiko Hayashi, Mikiko Saito, Masafumi Nakada

研究成果: Article

5 引用 (Scopus)

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To enhance the thermal stability of the NiO pinning layers for spin valves, α -Fe2O3 layers, of which the Neel temperature is 680°C for bulk, are deposited on NiO layers. With 15-80 Å thick α-Fe2O3 layers on NiO layers, an exchange anisotropy field about five times larger than that of NiO/NiFe is obtained after 250°C thermal annealing. Spin valve multilayers with NiO/α-Fe2O3 antiferromagnets show about 12% MR ratio. After 150°C annealing, MR ratio changes less than 20% for patterned spin valve multilayers with abutted junctioned hard magnets.

元の言語English
ページ(範囲)954-956
ページ数3
ジャーナルIEEE Transactions on Magnetics
34
発行部数4 PART 1
DOI
出版物ステータスPublished - 1998 12 1

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ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Electrical and Electronic Engineering

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