Soft magnetic properties and microstructure of NiFe(Cr)/FeCo/NiFe(Cr) films with large saturation magnetization

H. Katada, T. Shimatsu, I. Watanabe, H. Muraoka, Y. Nakamura

研究成果: Conference article査読

22 被引用数 (Scopus)

抄録

The soft magnetic properties of FeCo films, sandwiched by thin NiFe or NiFeCr films, are discussed in relation to the microstructure. Ta/NiFe(Cr)(5 nm)/FeCo(100 nm)/NiFe(Cr)(5 nm)/Ta films prepared using the UHV sputtering process with pure Ar plasma show bcc-(110) preferred grain orientation of FeCo layer with the 〈110〉 direction sharply perpendicular to the film plane, resulting in soft magnetic properties. No significant difference in soft magnetic properties was observed by the use of nonmagnetic NiFeCr layers instead the NiFe layers, moreover, by varying FeCo composition between 25 and 30 at%Co. The best thickness of the FeCo layer in order to realize soft magnetic properties was found to be ∼ 100 mn in the present study, with a high saturation magnetization of 2.3 T. An addition of N2 gas to Ar plasma during film deposition did not lead to an improvement of the soft magnetic properties. A film of [FeCo(100 nm)/NiFe(5 nm)4 layer structure was subjected to the fabrication of single-pole-type recording head, and it is successfully demonstrated that the film has a sufficient softness to be used for the recording head application.

本文言語English
ページ(範囲)2225-2227
ページ数3
ジャーナルIEEE Transactions on Magnetics
38
5 I
DOI
出版ステータスPublished - 2002 9
イベント2002 International Magnetics Conference (Intermag 2002) - Amsterdam, Netherlands
継続期間: 2002 4 282002 5 2

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

「Soft magnetic properties and microstructure of NiFe(Cr)/FeCo/NiFe(Cr) films with large saturation magnetization」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