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Spin-1 Blume–Capel model with longitudinal random crystaland transverse magnetic fields:a mean-field approach |
Erhan Albayrak |
Department of Physics, Erciyes University, Kayseri 38039, Turkey |
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Abstract The spin-1 Blume-Capel model with transverse Ω and longitudinal external magnetic fields h in addition to a longitudinal random crystal field D is studied in the mean-field approximation. It is assumed that the crystal field is either turned on with probability p or turned off with probability 1-p on the sites of a square lattice. Then the phase diagrams are calculated on the reduced temperature-crystal field planes for given values of γ=Ω/J and p at zero h. Thus, the effect of changing γ and p are illustrated on the phase diagrams in a great detail and interesting results are observed.
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Received: 17 December 2012
Revised: 23 February 2013
Accepted manuscript online:
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PACS:
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75.10.Hk
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(Classical spin models)
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75.30.Kz
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(Magnetic phase boundaries (including classical and quantum magnetic transitions, metamagnetism, etc.))
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75.50.Gg
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(Ferrimagnetics)
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Corresponding Authors:
Erhan Albayrak
E-mail: albayrak@erciyes.edu.tr
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Cite this article:
Erhan Albayrak Spin-1 Blume–Capel model with longitudinal random crystaland transverse magnetic fields:a mean-field approach 2013 Chin. Phys. B 22 077501
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