Phase transition and compensation temperature in the mixed spin-1 and spin-12 anisotropic Heisenberg ferrimagnet

2011 ◽  
Vol 390 (11) ◽  
pp. 1953-1960 ◽  
Author(s):  
A. Bobák ◽  
J. Dely ◽  
M. Žukovič
Keyword(s):  
Phase Transition ◽  
Compensation Temperature ◽  
Mixed Spin

Mixed-spin Ising model and compensation temperature

2004 ◽  
Vol 69 (5) ◽  
Author(s):  
Maurício Godoy ◽  
Vanessa Souza Leite ◽  
Wagner Figueiredo
Keyword(s):  
Ising Model ◽  
Compensation Temperature ◽  
Mixed Spin

Phase transition of two-dimensional doped mixed-spin anisotropic ferromagnets

2015 ◽  
Vol 202 ◽  
pp. 1-7 ◽  
Author(s):  
Ai-Yuan Hu ◽  
Zhi-Min Wu ◽  
Yu-Ting Cui ◽  
Guo-Ping Qin
Keyword(s):  
Phase Transition ◽  
Two Dimensional ◽  
Mixed Spin

COMPENSATION TEMPERATURE OF A MIXED SPIN-1 AND SPIN-1/2 HEISENBERG FERRIMAGNETIC MODEL

2004 ◽  
Vol 18 (10n11) ◽  
pp. 1637-1649 ◽  
Author(s):  
JUN LI ◽  
GUOZHU WEI ◽  
AN DU
Keyword(s):  
Magnetic Field ◽  
External Magnetic Field ◽  
Crystal Field ◽  
Nearest Neighbor ◽  
Magnetic Behavior ◽  
Compensation Temperature ◽  
Square Lattice ◽  
Function Technique ◽  
Neighbor Interaction ◽  
Mixed Spin

The behavior of the compensation of a mixed spin-1 and spin-1/2 Heisenberg ferrimagnetic system on a square lattice is investigated theoretically by a two-time Green-function technique which takes into account the quantum nature of Heisenberg spins. The model includes the nearest and next-nearest neighbor interactions between spins, a crystal field and an external magnetic field. This model can be relevant for understanding the magnetic behavior of bimetallic molecular ferrimagnets that are currently being synthesized by several experimental groups. We study the spin-wave spectra of the ground state and investigate the effects of the next-nearest neighbor interactions, a crystal field and an external magnetic field on the compensation temperature. It is found that a compensation point appears and it is basically unchanged when the next-nearest-neighbor interaction between spin-1/2 is taken into account and exceeds a minimum value for other values in Hamiltonian fixed. The compensation temperature is influenced by the next-nearest-neighbor interaction between spin-1 and the external magnetic field and it is disappearing as these parameters exceed the trivial values.

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