Magnetic transitions and phases in random-anisotropy magnets

Authors

David J. Sellmyer, University of Nebraska-LincolnFollow
S. Nafis, University of Nebraska - Lincoln
Michael J. O'Shea, Kansas State UniversityFollow

Document Type

Article

Date of this Version

4-15-1988

Comments

Published by American Institute of Physics. J. Applied Physics 63, 3743 (1988). ©1988 American Institute of Physics. Permission to use. http://jap.aip.org/jap/.

Abstract

The generality and universality of the Ising spin-glass-like phase transitions observed in several rare-earth, random-anisotropy magnets are discussed. Some uncertainties and practical problems in determining critical exponents are considered, and a comparison is made to insulating spin glasses and crystalline spin glasses where an apparent anisotropy-induced crossover from Heisenberg to Ising-like behavior is seen. The observation of a reentrant transition in a weak anisotropy system and its correlation with the theory of Chudnovsky, Saslow, and Serota [Phys. Rev. B 33, 251 (1986)] for the correlated spin glass is discussed. Journal of Applied Physics is copyrighted by The American Institute of Physics.