Tricritical behavior and magnetic properties for a mixed spin-1 and spin-3/2 transverse Ising model with a crystal field

被引：48
作者：
Jiang, W [1 ]
Wei, GZ
Zhang, ZD
机构：
[1] Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Peoples R China
[2] Shenyang Univ Technol, Coll Sci, Shenyang 110023, Peoples R China
[3] Northeastern Univ, Coll Sci, Shenyang 110006, Peoples R China
[4] Chinese Acad Sci, Int Ctr Mat Phys, Shenyang 110016, Peoples R China
来源：
PHYSICAL REVIEW B | 2003年 / 68卷 / 13期
关键词：
D O I：
10.1103/PhysRevB.68.134432
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
An effective-field theory is developed for a mixed Ising system, consisting of spin 1 and spin 3/2 with different anisotropies in a transverse field on a honeycomb (z=3) lattice. The general formula for determining the phase diagram of transition temperatures and tricritical points is derived and the temperature dependence of the total magnetization of the system is calculated. Some interesting phenomena, such as the appearance of two tricritical points and the existence of two compensation points in a ferrimagnet, are found and the physics beyond these phenomena are discussed in detail. The competition among the exchange coupling, the anisotropies, the transverse field, and the temperature has a profound effect on the characteristic of magnetic phases in the mixed-spin systems.
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页数：8
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共 36 条
  • [1] Mean-field solution of the mixed spin-1 and spin-3/2 Ising system with different single-ion anisotropies
    Abubrig, OF
    Horváth, D
    Bobák, A
    Jascur, M
    [J]. PHYSICA A, 2001, 296 (3-4): : 437 - 450
  • [2] NEW EFFECTIVE FIELD-THEORY FOR THE TRANSVERSE ISING-MODEL
    BARRETO, FCS
    FITTIPALDI, IP
    ZEKS, B
    [J]. FERROELECTRICS, 1981, 39 (1-4) : 1103 - 1106
  • [3] BARRETO FCS, 1985, PHYSICA A, V129, P360
  • [4] THEORY OF FIRST-ORDER MAGNETIC PHASE CHANGE IN UO2
    BLUME, M
    [J]. PHYSICAL REVIEW, 1966, 141 (02): : 517 - &
  • [5] FERRIMAGNETISM IN DILUTED MIXED ISING SPIN SYSTEMS
    BOBAK, A
    JASCUR, M
    [J]. PHYSICAL REVIEW B, 1995, 51 (17): : 11533 - 11537
  • [6] Multicritical points in the mixed spin-1 and spin-3/2 Ising system on a square lattice with different single-ion anisotropies
    Bobák, A
    [J]. PHYSICA A, 2000, 286 (3-4): : 531 - 540
  • [7] The effect of anisotropies on the magnetic properties of a mixed spin-1 and spin-3/2 Ising ferrimagnetic system
    Bobak, A
    [J]. PHYSICA A, 1998, 258 (1-2): : 140 - 156
  • [8] Bobak A, 1999, PHYS STATUS SOLIDI B, V213, P459, DOI 10.1002/(SICI)1521-3951(199906)213:2<459::AID-PSSB459>3.0.CO
  • [9] 2-0
  • [10] THE BEHAVIOR OF A FERRIMAGNET NEAR THE NEEL POINT
    BOWERS, RG
    YOUSIF, BY
    [J]. PHYSICS LETTERS A, 1983, 96 (01) : 49 - 52
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