The magnetocaloric effect in R5Si4 (R = Gd, Tb): a Monte Carlo calculation

In this work we calculate the magnetocaloric effect in the compounds Gd5Si4 and Tb5Si4. We use a model Hamiltonian of interacting spins, and treat the spin-spin interaction in the Monte Carlo simulation. The theoretically calculated isothermal entropy change and the adiabatic temperature change upon...

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Bibliographic Details
Published in:Journal of physics. Condensed matter 2006-02, Vol.18 (4), p.1275-1283
Main Authors: Nóbrega, E P, de Oliveira, N A, von Ranke, P J, Troper, A
Format: Article
Language:English
Subjects:
Condensed matter: electronic structure, electrical, magnetic, and optical properties
Domain effects, magnetization curves, and hysteresis
Exact sciences and technology
Magnetic properties and materials
Magnetically ordered materials: other intrinsic properties
Magnetization curves, hysteresis, Barkhausen and related effects
Magnetization curves, magnetization reversal, hysteresis, barkhausen and related effects
Magnetocaloric effect, magnetic cooling
Physics
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Summary:In this work we calculate the magnetocaloric effect in the compounds Gd5Si4 and Tb5Si4. We use a model Hamiltonian of interacting spins, and treat the spin-spin interaction in the Monte Carlo simulation. The theoretically calculated isothermal entropy change and the adiabatic temperature change upon variation of the magnetic field are in good agreement with the available experimental data.
ISSN:0953-8984
1361-648X
DOI:10.1088/0953-8984/18/4/013