S. B. Roy and P. Chaddah Phase-coexistence and glass-like behavior in magnetic and dielectric solids with long-range order physica status solidi (b) 251
The kinetic arrest of a first-order magnetic transition, between two states with long-range magnetic order, results in the formation of a ‘magnetic glass’. This has been observed in various classes of magnetic materials, including intermetallic compounds starting with Aldoped CeFe2, giant magneto-caloric material Gd5Ge4, CMR manganites, and magnetic shape memory alloys. Measurements under the CHUF (cooling and heating in unequal field) protocol confirm that this is a magnetic glass and not a ‘strain glass’. This article discusses in detail the glassy behavior which was observed in various magnetic and dielectric solids with long-range order and which is distinctly different from spin-glass behavior.
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