A first order phase transition induced by magnetic field and temperature

Details A first order phase transition induced by magnetic field and temperature A first order phase transition induced by magnetic field and temperature

2001-02-12

arxiv.org/abs/cond-mat/0102199v1

Physics

Condensed Matter

Strongly Correlated Electrons

10 pages and 2 figures

Scientific paper

Taking the pseudobinary C15-Laves phase compound Ce(Fe$_{0.96}$Al$_{0.04}$)$_2$ 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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