Understanding the role played by Fe on the tuning of magnetocaloric effect in Tb5Si2Ge2

• Type: Article in International Scientific Journal
• Date: 2011

Authors

pereira, a. m. (Author) FCUP; dos santos, a. m. (Author) Other; magen, c. (Author) Other; sousa, j. b. (Author) Other; algarabel, p. a. (Author) Other; ren, y. (Author) Other; ritter, c. (Author) Other; morellon, l. (Author) Other; ibarra, m. r. (Author) Other; araujo, j. p. (Author) FCUP

Journal

Title: Applied Physics Letters

Vol. 98

Final page: 122501

ISSN: 0003-6951

Publisher: American Institute of Physics

Indexing

ISI Web of Knowledge - 17 Citations

Scopus - 19 Citations

Other information

Authenticus ID: P-002-T6X

DOI: 10.1063/1.3567920

Abstract (EN): In this letter, it is shown that when replacing Ge by Fe in Tb5Si2Ge2 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. (C) 2011 American Institute of Physics. [doi:10.1063/1.3567920]

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 3