Enhancement of magnetocaloric effect in B-rich FeZrBCu amorphous alloys

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

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Magnetic properties and magnetocaloric effect were studied in the Fe92-xZr7BxCu1 amorphous alloy series (x = 0-23 at.%). Enhancement of the magnetocaloric effect was observed in the B-rich side (x > 15 at.%) which correlates well with the anomalous increase of the saturation magnetic moment per Fe atom in this concentration range. Research into Fe2(B1-yETMy) amorphous alloys (ETM = Zr, Nb, Ti and V; y = 0-0.55 atomic fraction for Zr and to 0.25 atomic fraction for the rest) reveals an unexpected increase of the iron magnetic moment when early transition metals are substituted for B up to y = 0.1-0.25 atomic fraction. This behavior is attributed to the highly attractive B-ETM interaction. Similar mechanism is thought to explain the anomalous increase of the iron magnetic moment and hence the magnetocaloric effect in the boron-rich Fe1-xZr7BxCu1 amorphous alloys. Universal scaling of the magnetic entropy change curves is also used to detect differences between Fe92-xZr7BxCu1 alloys.

Original languageEnglish
Pages (from-to)756-760
Number of pages5
JournalJournal of Alloys and Compounds
Publication statusPublished - Feb 15 2015



  • Early transition metals
  • FeZrBCu amorphous alloys
  • Magnetic moment
  • Magnetocaloric effect

ASJC Scopus subject areas

  • Mechanics of Materials
  • Mechanical Engineering
  • Metals and Alloys
  • Materials Chemistry

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