Ferromagnetic Properties of Bond-Dilution and Random Positive orNegative Uniaxial Anisotropy Blume-Capel Model |
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| Authors: | ZHU Hai-Xia and YAN Shi-Lei |
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| Affiliation: | 1. Department of Physics, Suzhou University, Suzhou 215006, China;2. Key Laboratory of Film Material of Jiangsu Province, SuzhouUniversity, Suzhou 215006, China;3. CCAST (World Laboratory), P.O. Box 8730, Beijing 100080, China |
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| Abstract: | We study the ferromagnetic properties of spin-1 system,which is considered in the frame of the bond-dilution and random positive ornegative anisotropy Blume-Capel model in the effective field theoryand a cutting approximation. The investigation of phase diagrams displayssome rich properties of the trajectory of tricritical point, reentrantphenomena at low temperatures. Under certain both bond concentrations andrandom negative anisotropy, there are new transition lines of doubletricritical points. So special emphasis is placed on the influence of thebond dilution and random anisotropy on phase diagrams. The magnetizations ofthe system are also discussed. Some results have not been revealed inprevious reports. |
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| Keywords: | ferromagnetic properties Blume-Capel model bond dilution random uniaxialanisotropy effective field theory |
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