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Published on: August 15, 2018
Understanding the inverse magnetocaloric effect in antiferro- and ferrimagnetic arrangements
P J von Ranke1, N A de Oliveira, B P Alho
1Instituto de Física 'Armando Dias Tavares', Universidade do Estado do Rio de Janeiro-UERJ, Rua São Francisco Xavier, 524, 20550-013, RJ, Brazil.
Abstract:
The inverse magnetocaloric effect occurs when a magnetic material cools down under applied magnetic field in an adiabatic process. Although the existence of the inverse magnetocaloric effect was recently reported experimentally, a theoretical microscopic description is almost nonexistent. In this paper we theoretically describe the inverse magnetocaloric effect in antiferro- and ferrimagnetic systems. The inverse magnetocaloric effects were systematically investigated as a function of the model parameters. The influence of the Néel and the compensation temperature on the magnetocaloric effect is also analyzed using a microscopic model.
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