Magnetic susceptibility of systems with different types of interactions: The random interaction fields method

The random interaction fields method makes it possible:1.to investigate the susceptibility of magnetics materials;2.to determine the critical concentrations at which ordering of the cluster spin-glass type occurs;3.to separate the temperatures of occurrence of near and far orders. In the framework o...

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Bibliographic Details
Published in:Journal of magnetism and magnetic materials 2020-10, Vol.512, p.167051, Article 167051
Main Authors: Belokon, V., Lapenkov, R., Chibiriak, E., Dyachenko, O.
Format: Article
Language:English
Subjects:
Antiferromagnetism
Curie point
Ferromagnetic materials
Ising model
Magnetic permeability
Magnetic phase transitions
Magnetism
Phase diagram
Phase diagrams
Random-field method
Spin glasses
Susceptibility
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Summary:The random interaction fields method makes it possible:1.to investigate the susceptibility of magnetics materials;2.to determine the critical concentrations at which ordering of the cluster spin-glass type occurs;3.to separate the temperatures of occurrence of near and far orders. In the framework of the random interaction fields method, the behavior of magnetic susceptibility is described in ferromagnetic materials, antiferromagnetic materials, and spin glasses. Phase diagrams for systems with competing exchange interactions are built. The conditions for the occurrence of different types of magnetic ordering are defined. The ferromagnetic Curie points for different numbers of neighboring atoms are calculated.
ISSN:0304-8853
1873-4766
DOI:10.1016/j.jmmm.2020.167051