Monte Carlo Study of Magnetostructural Phase Transitions in Ni50Mn25+xSb25-x Heusler Alloys

V.V. Sokolovskiy; Vasiliy D. Buchelnikov; Sergey Taskaev

doi:10.4028/www.scientific.net/SSP.154.139

Paper Titles

Experimental Validation of Numerical Methods of MRE Simulations
p.113

Elastomers Containing Fillers with Magnetic Properties
p.121

Tensile Stress-Strain Relationships of Magnetorheological Fluids under Various Factors
p.127

Texture Analysis of Hot Rolled Ni-Mn-Ga Alloys
p.133

Monte Carlo Study of Magnetostructural Phase Transitions in Ni₅₀Mn_25+xSb_25-x Heusler Alloys
p.139

Microstructure and Magnetic Properties of Two Phase β+γ Ferromagnetic Co-Ni-Al Alloys
p.145

Effect of Annealing Conditions on the Structure of Ni₅₀Mn₂₉Ga₂₁ Shape Memory Alloy
p.151

Sensor of Current or Magnetic Field Based on Magnetoresistance Effect in (La_0.7Ca_0.3)_0.8Mn_1.2O₃ Manganite Film
p.157

Field Dependence of the Refrigerant Capacity for La_0.6Ca_0.4MnO₃ Manganite
p.163

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Monte Carlo Study of Magnetostructural Phase Transitions in Ni₅₀Mn_25+xSb_25-x Heusler Alloys

Abstract:

On the basis of Monte Carlo simulations, we investigate the temperature dependence of magnetization of Ni-Mn-Sb Heusler alloys, in which the part of the Mn atoms interact antiferromagnetically. It is shown that this antiferromagnetic exchange is responsible for existence of several magnetic phase transitions in the Heusler alloys. For a certain set of parameters of the model Hamiltonian we obtain coupled martensitic and magnetic phase transitions. Results of simulations agree in an excellent way with the experimental magnetization curves.