• Title/Summary/Keyword: Co-Cr-Pd films

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Underlayer for Coercivity Enhancement of Ti/CoCrPt Thin Films (보자력 향상을 위한 Ti/CoCrPt박막의 하지층)

  • Jang, Pyung-Woo
    • Journal of the Korean Magnetics Society
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    • v.12 no.3
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    • pp.94-98
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    • 2002
  • Sputtering conditions and various underlayer such as Al, Cu, Ni, Cr, Ag, Mg, Fe, Co, Pd, Au, Pt, Mo and Hf were investigated for coercivity enhancement of 20 nm Ti/CoCrPt thin films in order to increase the coercivity of the films thinner than 20 nm. Among them, Ag and Mg were effective to increase the coercivity. Particularly 2 nm Ag was very effective to increase the coercivity and nucleation field as well as to reduce ${\alpha}$ value in CoCrPt thin film such that the coercivity of 2 nm Ag/18 nm Ti/10 nm CoCrPt film was 2200 Oe. However, it seemed that other coercivity enhancement mechanism operated in CoCrPt films because Ti (002) preferred texture was not developed with Ag underlayer contrary to a general expectation. And the coercivity and nucleation field were decreased when glass substrate with rougher surface was used.

SPIN REORIENTATION TRANSIT10N OF ULTRATHIN Co FILMS ON ARTIFICIALLY ROUGHENED Pd(111) SINGLE CRYSTAL (블록 공중합체를 이용한 CoCrPt 나노점 배열의 자기적 성질 연구)

  • Jeong, Jong-Ryul;Park, Yong-Sung;Kim, Jong-Hyun;Lee, Jeong-Won;Shin, Sung-Chul
    • Proceedings of the Korean Magnestics Society Conference
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    • 2002.12a
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    • pp.78-79
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    • 2002
  • It is well known that surface and interface roughnesses greatly affect the magnetic properties such as magnetic domain structure, magnetization reversal, magnetoresistance, and spin reorientation transition (SRT) of ultrathin magnetic films. Therefore, recent studies focus on artificially roughened surface, since it could be possible to systematically understand the effect of roughness on the magnetic properties as well as to obtain the desirable magnetic properties by artificially creating the surface structure and morphology. (omitted)

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