Understanding the role played by Fe on the tuning of magnetocaloric effect in Tb5 Si2 Ge2

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review

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Author(s)

  • A. M. Pereira
  • A. M. Dos Santos
  • C. Magen
  • J. B. Sousa
  • P. A. Algarabel
  • C. Ritter
  • L. Morellon
  • M. R. Ibarra
  • J. P. Araújo

Detail(s)

Original languageEnglish
Article number122501
Journal / PublicationApplied Physics Letters
Volume98
Issue number12
Publication statusPublished - 21 Mar 2011
Externally publishedYes

Abstract

In this letter, it is shown that when replacing Ge by Fe in Tb5 Si2 Ge2 the structural transition still occurs and enhances the magnetocaloric effect (MCE) (up to 66%) with maximum of MCE at a critical Fe amount where the magnetic and structural transitions become fully coupled. It is observed that Fe concentration is able to mimic the effect of external pressure as it induces a complex microstructure, that tunes long range strain fields. This knowledge is crucial for the development of strategies toward materials with improved performance for efficient magnetic refrigeration applications. © 2011 American Institute of Physics.

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Citation Format(s)

Understanding the role played by Fe on the tuning of magnetocaloric effect in Tb5 Si2 Ge2. / Pereira, A. M.; Dos Santos, A. M.; Magen, C.; Sousa, J. B.; Algarabel, P. A.; Ren, Y.; Ritter, C.; Morellon, L.; Ibarra, M. R.; Araújo, J. P.

In: Applied Physics Letters, Vol. 98, No. 12, 122501, 21.03.2011.

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review