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First order transition from antiferromagnetism to ferromagnetism in Ce(Fe$_{0.96}$Al$_{0.04})_2$

M. A. Manekar·S. Chaudhary·M. K. Chattopadhyay·K. J. Singh·S. B. Roy·P. Chaddah
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Abstract

Results of dc magnetization study are presented showing interesting thermomagnetic history effects across the antiferromagnetic to ferromagnetic transition in Ce(Fe$_{0.96}$Al$_{0.04})_2$. Specifically, we observe (i)ZFC/FC irreversibility rising with increasing field; (ii) virgin curve lying outside the envelope M-H curve. We argue that these effects are quite different from the characteristics seen in spin-glasses or in hard ferromagnets; they can be understood as metastabilities associated with a first order magnetic phase transition.

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M. A. Manekar, S. Chaudhary, M. K. Chattopadhyay, K. J. Singh, S. B. Roy, P. Chaddah. 2000-12-27. First order transition from antiferromagnetism to ferromagnetism in Ce(Fe$_{0.96}$Al$_{0.04})_2$. https://doi.org/10.1103/physrevb.64.104416

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