Estimation of magnetocaloric properties by using Monte Carlo method for AMRR cycle

R. Arai, R. Tamura, H. Fukuda, J. Li, A. T. Saito, S. Kaji, H. Nakagome, T. Numazawa

Research output: Contribution to journalConference articlepeer-review

6 Citations (Scopus)

Abstract

In order to achieve a wide refrigerating temperature range in magnetic refrigeration, it is effective to layer multiple materials with different Curie temperatures. It is crucial to have a detailed understanding of physical properties of materials to optimize the material selection and the layered structure. In the present study, we discuss methods for estimating a change in physical properties, particularly the Curie temperature when some of the Gd atoms are substituted for non-magnetic elements for material design, based on Gd as a ferromagnetic material which is a typical magnetocaloric material. For this purpose, whilst making calculations using the S=7/2 Ising model and the Monte Carlo method, we made a specific heat measurement and a magnetization measurement of Gd-R alloy (R = Y, Zr) to compare experimental values and calculated ones. The results showed that the magnetic entropy change, specific heat, and Curie temperature can be estimated with good accuracy using the Monte Carlo method.

Original languageEnglish
Article number012118
JournalIOP Conference Series: Materials Science and Engineering
Volume101
Issue number1
DOIs
Publication statusPublished - 2015 Dec 18
Event2015 Joint Cryogenic Engineering and International Cryogenic Materials Conferences, CEC/ICMC 2015 - Tucson, United States
Duration: 2015 Jun 282015 Jul 2

ASJC Scopus subject areas

  • Materials Science(all)
  • Engineering(all)

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