Magnetocaloric Properties of Gd{sub 5}Si{sub 2}Ge{sub 2} Alloy: Monte Carlo Simulation Study
There has been a significant increase in research of magnetocaloric materials because of its efficiency and environment friendliness for magnetic refrigeration applications at room temperature. The investigation of magnetocaloric effect (MCE) in RE{sub 5}(Si{sub x}Ge{sub 1−x}){sub 4} alloys (where RE = Gd) shows large entropy changes ∆S{sub m} over a wide range of temperature. In this work, we study the GMCE in Gd{sub 5}Si{sub 2}Ge{sub 2} alloy using Monte Carlo simulation. To attain this aim, we use DFT first to determine the exchange couplings of the alloy. The studied compound displays a magnetic entropy change of −∆S{sub m} = 9.97 J/kg.K when subjected to a change of 0–5 T in the magnetic field, and also undergoes structural modifications whose effects recur on the magnetic behavior. In addition, this work is comforted by the agreement with previous experimental results.
- OSTI ID:
- 22922941
- Journal Information:
- Journal of Superconductivity and Novel Magnetism, Journal Name: Journal of Superconductivity and Novel Magnetism Journal Issue: 8 Vol. 32; ISSN 1557-1939
- Country of Publication:
- United States
- Language:
- English
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