The pressure dependence of the Curie temperature of heterogeneous ferromagnetic alloys

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Abstract
The empirical evidence for a systematic dependence of the laws regarding the pressure dependence of the Curie temperature of alloys on their structural and magnetic heterogeneity is presented. The materials covered include both crystalline and amorphous alloys. Previous interpretations of the results are given, followed by a discussion on the basis of the Landau-Ginzburg formalism which is concerned with concentration fluctuations and which reduces the magnetovolume problem to a purely magnetic one. A reasonable approach to the problem gives results in semi-quantitative agreement with the empirical evidence.