Magnetic properties of Sm-Co-Cu and Sm-Co-Cu/Co exchange-spring films with high coercivity

Yoshihiro Yamazaki, K. Takano, H. Takamura, S. Sugimoto, M. Homma, M. Okada

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

The magnetic properties of Sm-Co-Cu films and Sm-Co-Cu/Co multilayered films prepared by rf-sputtering were investigated. The addition of Cu to Sm-Co film had the effect of decrement of crystallization temperature. The Sm28Co39Cu13 film annealed for 1 h at 623 K showed a reversible demagnetization curve with 82% springback ratio of [Mr' -M(H)]/[Mr-M(H)] and a high coercivity of 2480 kA·m-1. This film was found to be an exchange-spring magnet film composed of the hard magnetic phase such as SmCo5 and Sm2Co7 phases and a soft magnetic phase of Co. Sm28Co59Cu13/Co(x nm) multilayered film whose Co thickness was from 0 to 15 nm was also found to be an exchangespring magnet film.

Original languageEnglish
Pages (from-to)302-307
Number of pages6
Journalmaterials transactions, jim
Volume39
Issue number2
DOIs
Publication statusPublished - Jan 1 1998
Externally publishedYes

Fingerprint

Coercive force
coercivity
Magnetic properties
magnetic properties
Magnets
magnets
Demagnetization
demagnetization
Crystallization
Sputtering
sputtering
crystallization
curves

All Science Journal Classification (ASJC) codes

  • Engineering(all)

Cite this

Magnetic properties of Sm-Co-Cu and Sm-Co-Cu/Co exchange-spring films with high coercivity. / Yamazaki, Yoshihiro; Takano, K.; Takamura, H.; Sugimoto, S.; Homma, M.; Okada, M.

In: materials transactions, jim, Vol. 39, No. 2, 01.01.1998, p. 302-307.

Research output: Contribution to journalArticle

Yamazaki, Yoshihiro ; Takano, K. ; Takamura, H. ; Sugimoto, S. ; Homma, M. ; Okada, M. / Magnetic properties of Sm-Co-Cu and Sm-Co-Cu/Co exchange-spring films with high coercivity. In: materials transactions, jim. 1998 ; Vol. 39, No. 2. pp. 302-307.
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AU - Homma, M.

AU - Okada, M.

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