Email this article Bethe Approximation for Pure and Diluted Magnets as Averaging over Local Exchange Fields
- Authors: Semkin S.V.1, Smagin V.P.1
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Affiliations:
- Vladivostok State University of Economics and Service
- Issue: Vol 62, No 1 (2019)
- Pages: 172-178
- Section: Physics of Magnetic Phenomena
- URL: https://bakhtiniada.ru/1064-8887/article/view/241523
- DOI: https://doi.org/10.1007/s11182-019-01698-9
- ID: 241523
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Abstract
An interpretation of the Bethe approximation based on the method of averaging over local exchange fields taking into account the correlation of neighboring spins is proposed. Based on this interpretation, an approximate method of analysis of Ising magnetics with nonmagnetic dilution is constructed. In the approximation considered, percolation thresholds and dependences of the Curie temperature on the concentration of magnetic atoms for lattices with different coordination numbers are calculated.
About the authors
S. V. Semkin
Vladivostok State University of Economics and Service
Author for correspondence.
Email: Li15@rambler.ru
Russian Federation, Vladivostok
V. P. Smagin
Vladivostok State University of Economics and Service
Email: Li15@rambler.ru
Russian Federation, Vladivostok
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