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Taguchi Y, Sakai H, Choudhury D. Magnetocaloric Materials with Multiple Instabilities. Adv Mater. 2017;29(25)doi: 10.1002/adma.201606144.
Taguchi, Y., Sakai, H., & Choudhury, D. (2017). Magnetocaloric Materials with Multiple Instabilities. Advanced materials (Deerfield Beach, Fla.), 29(25), . https://doi.org/10.1002/adma.201606144
Taguchi, Yasujiro, et al. "Magnetocaloric Materials with Multiple Instabilities." Advanced materials (Deerfield Beach, Fla.) vol. 29,25 (2017). doi: https://doi.org/10.1002/adma.201606144
Taguchi Y, Sakai H, Choudhury D. Magnetocaloric Materials with Multiple Instabilities. Adv Mater. 2017 Jul;29(25). doi: 10.1002/adma.201606144. Epub 2017 Apr 07. PMID: 28387437.
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Adv Mater. 2017 Jul;29(25). doi: 10.1002/adma.201606144. Epub 2017 Apr 07.

Magnetocaloric Materials with Multiple Instabilities.

Advanced materials (Deerfield Beach, Fla.)

Yasujiro Taguchi, Hideaki Sakai, Debraj Choudhury

Affiliations

  1. RIKEN Center for Emergent Matter Science (CEMS), Wako, 351-0198, Japan.
  2. Department of Physics, Osaka University, Toyonaka, 560-0043, Japan.
  3. Precursory Research for Embryonic Science and Technology (PRESTO), Japan Science and Technology Agency, Kawaguchi, 332-0012, Japan.
  4. Department of Physics, Indian Institute of Technology Kharagpur, Kharagpur, 721302, India.

PMID: 28387437 DOI: 10.1002/adma.201606144

Abstract

The magnetocaloric effect is a well-known phenomenon where the temperature of a magnetic material varies upon application or removal of a magnetic field. This effect is anticipated to be applied to magnetic refrigeration technology, which is environmentally benign. For practical applications, it is essential to explore and expand the materials horizon of novel magnets that exhibit giant magnetocaloric effects to achieve sufficient cooling efficiency. In this article, several attempts to enhance the magnetocaloric effect are reviewed from the viewpoint of the competition or cooperation between the ferromagnetic interaction and other magnetic, electronic, and structural instabilities in strongly correlated materials. The results indicate that both the competition and cooperation between them promote the first-order nature of the magnetic transition, leading to giant magnetocaloric effects. Therefore, exploiting multiple instabilities is a promising strategy for exploring new magnetocaloric materials.

© 2017 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.

Keywords: ferromagnets; first-order transition; magnetocaloric effects; multiple instabilities

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