Phase transition features of the bond-dilution transverse ferromagnetic Ising spin system with random crystal field |
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| Affiliation: | 1. Department of Physics, Suzhou University, 215006 Suzhou, China;2. Provincial Laboratory of Thin Film Materials, Suzhou University, Suzhou 215006, China;3. CCAST (World Laboratory), P.O. Box 8730, Beijing 100080, China;1. Department of Teacher Education and School Research (ILS) and Centre for Educational Measurement at the University of Oslo, Faculty of Educational Sciences, University of Oslo, Norway;2. University of South-Eastern Norway (USN), Drammen, Norway;3. Vrije Universiteit Brussel & Ghent University, Belgium;1. Department of Studies in Microbiology, University of Mysore, Manasagangotri, Mysuru 570 006, Karnataka, India;2. Department of Microbiology, Yuvaraja''s College (Autonomous), University of Mysore, Mysuru 570005, Karnataka, India;3. Department of Studies in Environmental Science, University of Mysore, Manasagangotri, Mysuru 570006, Karnataka, India;4. Department of Zoology, Bangalore University, Jnanabharathi Campus, Bangalore 560 056 Karnataka, India |
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| Abstract: | The bond dilution spin-1 transverse ferromagnetic Ising model with random crystal field is investigated in the framework of effective field theory (EFT). The general expressions of magnetization are derived for lattice with any coordination number z. In particular, we calculate the phase diagrams of a square lattice. The second-order phase transition lines and the tricritical points are presented in different conditions for the square lattice. Special emphasis is placed on the influence of bond dilution, random crystal field and the transverse field on the phase diagrams. We discover some unusual phenomena. New results obtained in this paper are discussed in detail. |
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