Microscopic study on magnetocaloric and electrocaloric effects near the critical point

Hitoshi Honmi, Yoichiro Hashizume, Takashi Nakajima, Soichiro Okamura

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)

Abstract

Adiabatic temperature changes of magnetocaloric/electrocaloric effects are analytically investigated. The analytical studies are based on the microscopic statistical models such as Husimi-Temperley model and Slater model. As a result, we show the characteristic scales of the adiabatic processes correspond to microscopic parameters, namely exchange couplings and Slater energy. The scaled parameter dependence become stronger near the critical point. Furthermore, using a general Hamiltonian method, we clarify the adiabatic temperature changes depend on the relative ratio of characteristic scales. The present study may propose a useful aspect for applications.

Original languageEnglish
Pages (from-to)126-135
Number of pages10
JournalPhysica A: Statistical Mechanics and its Applications
Volume433
DOIs
Publication statusPublished - 2015 Sep 1

Keywords

  • Adiabatic process
  • Fluctuation
  • Husimi-Temperley model
  • Magnetocaloric/electrocaloric effects
  • Phase transition
  • Slater model

ASJC Scopus subject areas

  • Statistics and Probability
  • Condensed Matter Physics

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