Share

IIR document

Tuning magnetic exchange interactions to enhance magnetocaloric effect in Ni50Mn34In16 Heusler alloy: Monte Carlo and ab initio studies.

Author(s) : SOKOLOVSKIY V. V., BUCHELNIKOV V. D., KHOVAYLO V., et al.

Type of article: Article, IJR article

Summary

Influence of the strength of magnetic exchange interactions and impact of a ferromagnetic-antiferromagnetic exchange competition on magnetocaloric effect in a Ni50Mn34In16 Heusler alloy are studied by a Monte Carlo simulation. Temperature dependencies of magnetic and magnetocaloric properties are obtained in the framework of Potts and Blume-Emery-Griffiths models. It is shown that a decrease of the exchange interactions as well as “switching off” ferromagnetic interactions between the Mn atoms in the martensite favors the inverse magnetocaloric effect in Ni50Mn34In16. Contrary, “switching off” antiferromagnetic interactions depletes the inverse magnetocaloric effect. It is supposed that the exchange interactions in Ni–Mn-In alloys can be tuned favorably by a doping of the host alloys with nonmagnetic or antiferromagnetic atoms, e.g., B, Cu, Cr, etc.

Available documents

Format PDF

Pages: 273-280

Available

  • Public price

    20 €

  • Member price*

    Free

* Best rate depending on membership category (see the detailed benefits of individual and corporate memberships).

Details

  • Original title: Tuning magnetic exchange interactions to enhance magnetocaloric effect in Ni50Mn34In16 Heusler alloy: Monte Carlo and ab initio studies.
  • Record ID : 30009906
  • Languages: English
  • Source: International Journal of Refrigeration - Revue Internationale du Froid - vol. 37 - n. 1
  • Publication date: 2014/01

Links


See other articles in this issue (37)
See the source

Indexing