Monte Carlo Study of the Magnetic and Magnetocaloric Properties of La1-xCaxMnO3 (x = 0.33 and 0.5)

O.O. Pavlukhina; Vasiliy D. Buchelnikov; V.V. Sokolovskiy; Mikhail A. Zagrebin

doi:10.4028/www.scientific.net/SSP.190.347

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Monte Carlo Study of the Magnetic and Magnetocaloric Properties of La₁-_xCa_xMnO₃ (x = 0.33 and 0.5)

Abstract:

In our work the temperature dependencies of magnetization, entropy changes, and the Curie temperature (T_C) of La_1-xCa_xMnO₃ (x = 0.33 and 0.5) were investigated using Monte Carlo method and Heisenberg model. In our simulation, magnetic Mn³⁺ and Mn⁴⁺ ions are described by classical Heisenberg spins, while oxygen, lanthanum and calcium ions are considered as non-magnetic. The Mn magnetic ions are distributed on a simple cubic lattice according to the perovskite structure of the manganite. The theoretical Curie temperatures and magnetocaloric values are in a good agreement well with experimental data.

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Solid State Phenomena (Volume 190)

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347-350

DOI:

https://doi.org/10.4028/www.scientific.net/SSP.190.347

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Online since:

June 2012

Authors:

O.O. Pavlukhina, Vasiliy D. Buchelnikov, V.V. Sokolovskiy, Mikhail A. Zagrebin

Keywords:

Magnetocaloric Effect, Manganite, Monte-Carlo Simulation

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