Magnetocaloric response of FeCrB amorphous alloys: Predicting the magnetic entropy change from the Arrott-Noakes equation of state

V. Franco, A. Conde, L. F. Kiss

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Abstract

The magnetic entropy change in Fe92-x Cr8 Bx (x=12,15) amorphous alloys has been studied. Increasing the B content, both the peak entropy change and the Curie temperature of the alloy increase. This is in agreement with an increase in the average magnetic moment per iron atom. The thermal and field dependences of the magnetic entropy change curves have been analyzed with the use of the Arrott-Noakes equation of state. It is shown that determining the parameters in this equation of state (through fitting the magnetization data) allows prediction of the field and temperature dependences of the magnetic entropy change curves in a broad temperature range around the Curie temperature.

Original languageEnglish
Article number033903
JournalJournal of Applied Physics
Volume104
Issue number3
DOIs
Publication statusPublished - Aug 26 2008

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ASJC Scopus subject areas

  • Physics and Astronomy(all)

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