A first order phase transition induced by magnetic field and temperature
Singh, K. J. · Chaudhary, S. · Chattopadhyay, M. K. · Manekar, M. A. · Roy, S. B. · Chaddah, P.
Original · EN
Taking the pseudobinary C15-Laves phase compound Ce(Fe₀.₉₆Al₀.₀₄)₂ as a paradigm for studying a ferromagnetic(FM) to antiferromagnetic(AFM) phase transition, we present interesting thermomagnetic history effects in magnetotransport measurements across this FM-AFM transition. We argue that these distinctive hysteretic features can be used to identify the exact nature -first order or second order - of this kind of transition in magnetic systems where electrical transport is strongly correlated with the underlying magnetic order. A comparison is made with the similar FM-AFM transitions observed in Nd and Pr-based manganese compounds with perovskite-type structure.
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