Kohlraush thermal relaxation in a random magnet
Citation:
J M D Coey, D H Ryan and R Buder 'Kohlraush thermal relaxation in a random magnet' in Physical Review Letters, 58, (4), 1987, pp 385 - 388Download Item:
Abstract:
Specific-heat measurements on amorphous FexZr100-x (x=90 and 92) by a thermal relaxation method reveal a temperature decay of the form T(t)=T0+T exp[-(t/)] below 20 K, where the alloys are asperomagnetically ordered. 0.5 when T00. The stretched exponential is a manifestation of nonergodic behavior, because of the inability of the spin system to explore the available random magnetic configurations on the 100-ms times scale of the experiment.
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Author: COEY, JOHN MICHAEL DAVID
Publisher:
American Physical SocietyCollections
Series/Report no:
Physical Review Letters58
4
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