Magnetocaloric effect of Fe64Mn15-xCo xSi10B11 amorphous alloys

Jong Ho Lee, Seung Jae Lee, Won Bae Han, Hyeun Hwan An, Chong Seung Yoon

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Abstract

The magnetocaloric effect (MCE) of melt-spun Fe64Mn 15-xCoxSi10B11 amorphous alloys with x = 0, 0.2, 0.5, 0.7, and 1.0 was evaluated with the aim of maximizing the magnetic entropy change close to the room temperature. The peak magnetic entropy change, ΔSMpk for Fe64Mn15Si10B 11 at 309 K at H = 15 kOe was limited to 0.82 J/kg K. The magnetic properties and ensuing MCE were very sensitive to the Co content that it is conjectured that with a smaller amount of Co addition the ΔSMpk can be optimized while maintaining the Curie temperature near room temperature. It was also shown that the Fe64Mn15-xCoxSi 10B11 amorphous alloys obeyed the master curve behavior as the magnetic entropy change curve collapsed on to a single universal curve.

Original languageEnglish
Pages (from-to)7764-7767
Number of pages4
JournalJournal of Alloys and Compounds
Volume509
Issue number29
DOIs
Publication statusPublished - 2011 Jul 21

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Keywords

  • Fe-Mn amorphous alloy
  • Magnetic entropy
  • Magnetocaloric effect

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