Barocaloric effect in metamagnetic shape memory alloys

Manosa L., Stern-Taulats E., Planes A., Lloveras P., Barrio M., Tamarit J., ...More

PHYSICA STATUS SOLIDI B-BASIC SOLID STATE PHYSICS, vol.251, no.10, pp.2114-2119, 2014 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 251 Issue: 10
  • Publication Date: 2014
  • Doi Number: 10.1002/pssb.201350371
  • Journal Name: PHYSICA STATUS SOLIDI B-BASIC SOLID STATE PHYSICS
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.2114-2119
  • Keywords: barocaloric effect, magnetic shape memory alloys, metamagnetic shape memory alloys, pressure effects, ENTROPY CHANGE, REFRIGERATION, TRANSITIONS, CO
  • Ondokuz Mayıs University Affiliated: Yes

Abstract

We report on calorimetric measurements under hydrostatic pressure in a series of composition related metamagnetic shape memory alloys. We show that metamagnetic shape memory alloys exhibit a barocaloric effect whose magnitude compares well to the magnetocaloric effect exibited by this kind of alloys. While in metamagnetic alloys the magnetocaloric effect is inverse, the barocaloric effect has been found to be conventional. The values obtained for the pressure-induced entropy changes at moderate pressures are in the range of those reported for giant caloric materials. (C) 2014 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim