Phys. Rev. Lett. 92, 147203 (2004) [4 pages]First Order Magnetic Transition in Doped CeFe2 Alloys: Phase Coexistence and MetastabilityReceived 9 December 2003; published 9 April 2004 First order ferromagnetic (FM) to antiferromagnetic (AFM) phase transition in doped CeFe2 alloys is studied with the 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 a natural consequence of an intrinsic disorder-influenced first order transition. The generality of these phenomena involving other classes of materials is discussed. © 2004 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevLett.92.147203
DOI:
10.1103/PhysRevLett.92.147203
PACS:
75.30.Kz
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