Co-Cr基合金の磁気的に誘起される2相分離に関する熱力学計算

概要

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The phase equilibria of the magnetically induced phase separation in Co-Cr-Pt and Co-Cr-Ta systems have been discussed on the basis of the thermodynamic calculation method. The calculation results made it possible to elucidate the effects of Pt and Ta additions on the recording characteristics of the Co-Cr-based media. Both the miscibility gap of the hcp phase and the Cr content in the non-magnetic hcp phase are reduced with increasing Pt content, and the coercive force and media noise increase as a result. The Cr distribution in the paramagnetic hcp phase is promoted by Ta addition, and the magnetic grains are isolated from each other, thus reducing the media noise. Model calculations for a Co-Cr-X system were also performed. The calculated results are expected to be useful for the design of new magnetic recording media.
社団法人日本磁気学会の論文
2001-04-01