ＣｒＭｎ系反強磁性膜とＮｉＦｅ膜の交換結合

• 田所 茂

  (株）日立製作所ストレージシステム事業部

• 今川 尊雄

  (株）日立製作所ストレージシステム事業部

• 光岡 勝也

  (株）日立製作所ストレージシステム事業部

• 成重 眞治

  (株）日立製作所ストレージシステム事業部

• 添谷 進

  （株）日立製作所中央研究所

• 府山 盛明

  （株）日立製作所中央研究所

書誌事項

タイトル別名

• Exchange Coupling between CrMn-Based Antiferromagnetic Films and NiFe Films.

抄録

We investigated the exchange coupling between ferromagnetic Ni₈₁Fe₁₉ and antiferromagnetic CrMn alloy films. The exchange coupling field (H_EX) of CrMn alloy film, with 40 nm Ni₈₁Fe₁₉ film is 5 Oe at 50 at% Mn content. If several at% of Cu, Pt, Pd, and Rh are added to Cr₅₀Mn₅₀ films, H_EX is approximately 16 Oe. In the case of Pt addition, H_EX increases with increasing Pt content and saturates at more than 5 at% Pt. CrMnPt (110) films with body-centered cubic structures are formed on NiFe (111) films. With increasing sputtering Ar gas pressure, both H_EX and the blocking temperature (<i>T</i>_B) of Ni₈₁Fe₁₉/Cr₄₆Mn₄₆Pt₈ increase. At an Ar gas pressure of 15 mTorr, H_Ex and T_B are 15 Oe and 380°C, respectively. H_EX of Ni₈₁Fe₁₉/Cr₄₆Mn₄₆Pt₈ films decreases with decreasing CrMnPt film thickness, and at least 30 nm thickness is required in order to maintain a positive value of H_EX. From these results, we conclude that it may be possible to use antiferromagnetic CrMnPt film in MR heads and spin-valve films.

収録刊行物

• 日本応用磁気学会誌

  日本応用磁気学会誌 20 (2), 357-360, 1996

  公益社団法人 日本磁気学会

キーワード

• MR head
• spin valve
• CrMn
• exchange coupling
• antiferromagnetic film
• NiFe

詳細情報

• CRID: 1390001205093336448
• NII論文ID: 20000346205
• NII書誌ID: AN0031390X
• DOI: 10.3379/jmsjmag.20.357
• COI: 1:CAS:528:DyaK28XivFChu7k%3D
• ISSN: 18804004
• ISSN: 02850192
• ISSN: http://id.crossref.org/issn/02850192
• 本文言語コード: ja
• データソース種別:
  • JaLC
  • Crossref
  • CiNii Articles
• 抄録ライセンスフラグ: 使用不可