Magnetic and structural properties of Rh substituted Co-Cr alloy films with perpendicular magnetic anisotropy
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- K. Kobayashi
- Fujitsu Laboratories Ltd., Nakahara, Kawasaki 211, Japan
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- G. Ishida
- Fujitsu Laboratories Ltd., Nakahara, Kawasaki 211, Japan
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<jats:p>RF sputtered Co0.78−xCr0.22Rhx (where x is 0–0.06) alloy films for high density perpendicular recording were studied. First, Co-M (M = Cr, Ti, V, Mo, Pd, and Rh) alloy films were studied. They exhibit hcp crystallization and have a high orientation of the c-axis normal to the film plane. However, they have a smaller coercive force (less than 300 Oe), and with the exception of Co-Cr, they do not have a columnar structure or satisfy the relation Hk ≳4πMs. Next, Co-Cr-Rh alloy films were studied. They also exhibit hcp crystallization and their structure is columnar. They show perpendicular magnetic anisotropy similar to that of Co-Cr, and in particular, a higher c-axis orientation was obtained. The ΔΘ50, half the width of a rocking curve of a (002) peak, is about 20–40% smaller than that of Co-Cr. By measuring the recording characteristics of Co-Cr-Rh disks (on an anodized aluminum substrate), a maximum recording density of 23,000FRPI was obtained.</jats:p>
収録刊行物
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- Journal of Applied Physics
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Journal of Applied Physics 52 (3), 2453-2455, 1981-03-01
AIP Publishing
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詳細情報 詳細情報について
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- CRID
- 1363388843779123328
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- NII論文ID
- 30015876149
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- NII書誌ID
- AA00693547
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- DOI
- 10.1063/1.328964
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- ISSN
- 10897550
- 00218979
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