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Artigo Acesso aberto Revisado por pares
BIBTEX RIS

First Order Magnetic Transition in Doped CeFe 2 Alloys: Phase Coexistence and Metastability

2004; American Physical Society; Volume: 92; Issue: 14 Linguagem: Inglês

10.1103/physrevlett.92.147203

ISSN

1092-0145

Autores

S. B. Roy, G. K. Perkins, M. K. Chattopadhyay, A. K. Nigam, K.J.S. Sokhey, P. Chaddah, A.D. Caplin, L. F. Cohen,

Tópico(s)

Magnetic Properties of Alloys

Resumo

First order ferromagnetic (FM) to antiferromagnetic (AFM) phase transition in doped-CeFe$_2$ alloys is studied with micro-Hall probe technique. Clear visual evidence of magnetic phase-coexistence on micrometer scales and the evolution of this phase-coexistence as a function of temperature, magnetic field and time across the first order FM-AFM transition is presented. Such phase-coexistence and metastability arise as natural consequence of an intrinsic disorder-influenced first order transition. Generality of this phenomena involving other classes of materials is discussed.

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