Critical Behavior and Magnetocaloric Effect Simulation in NiMnGaTb Heusler Alloy

The critical behavior for the second-order ferromagnetic paramagnetic phase transition Ni 50 Mn 29 Ga 20.8 Tb 0.2 alloy is studied. The values of the critical exponents were found to be γ = 1.05 , β = 0.45 and are close to the ones described by the mean-field model. Using the Arrott–Noakes equation...

Full description

Saved in:
Bibliographic Details
Published inJournal of low temperature physics Vol. 210; no. 1-2; pp. 334 - 346
Main Authors Hsini, M., Zaidi, N., Khadhraoui, S.
Format Journal Article
LanguageEnglish
Published New York Springer US 2023
Springer Nature B.V
Subjects
Characterization and Evaluation of Materials
Condensed Matter Physics
Curie temperature
Equations of state
Ferromagnetism
Heusler alloys
Low temperature physics
Magnetic Materials
Magnetism
Phase transitions
Physics
Physics and Astronomy
Spontaneous magnetization
Magnetic entropy change
Landau theory
Critical exponents
Online AccessGet full text

Cover

More Information
Summary:The critical behavior for the second-order ferromagnetic paramagnetic phase transition Ni 50 Mn 29 Ga 20.8 Tb 0.2 alloy is studied. The values of the critical exponents were found to be γ = 1.05 , β = 0.45 and are close to the ones described by the mean-field model. Using the Arrott–Noakes equation of state with these γ and β values, the Curie temperature was successfully calculated. The isothermal magnetization M and magnetic entropy change - Δ S M curves were simulated using the Arrott–Noakes equation, the Landau theory and a mean field model.
ISSN:0022-2291
1573-7357
DOI:10.1007/s10909-022-02883-w