Non-universal critical behavior in the ferromagnetic transition of the ±J Ising model

Ferromagnetic (FM) transition of the ± J Ising model is studied for square and simple-cubic lattices by Monte Carlo simulations. Non-equilibrium relaxation (NER) process of magnetization from theall-aligned spin state is analyzed.The transition temperature is estimated at several values of FM bondco...

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Bibliographic Details
Published in:Journal of the Physical Society of Japan 1999-03, Vol.68 (3), p.803-810
Main Authors: ITO, N, OZEKI, Y, KITATANI, H
Format: Article
Language:English
Subjects:
Condensed matter: electronic structure, electrical, magnetic, and optical properties
Exact sciences and technology
General theory and models of magnetic ordering
Magnetic phase boundaries (including magnetic transitions, metamagnetism, etc.)
Magnetic properties and materials
Magnetically ordered materials: other intrinsic properties
Physics
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Summary:Ferromagnetic (FM) transition of the ± J Ising model is studied for square and simple-cubic lattices by Monte Carlo simulations. Non-equilibrium relaxation (NER) process of magnetization from theall-aligned spin state is analyzed.The transition temperature is estimated at several values of FM bondconcentrations to provide the boundary of the FM phase.The estimated NER exponent of magnetization shows non-universalbehavior and it becomes larger smoothly when the transitiontemperature becomes higher.
ISSN:0031-9015
1347-4073
DOI:10.1143/JPSJ.68.803