Ferromagnetic exchange interaction between Co and Mn in the Heusler alloy CuCoMnAl

L. Feng, L. Ma, Zhiyong Zhu, W. Zhu, E. K. Liu, J. L. Chen, G. H. Wu, F. B. Meng, H. Y. Liu, H. Z. Luo, Y. X. Li

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15 Scopus citations

Abstract

The ferromagnetic exchange interaction between Co and Mn in Heusler alloys has been phenomenologically investigated by analyzing the composition dependence of the magnetic moment and the Curie temperature in a series of quaternary CuCoMnAl alloys. The curves of the composition dependence of the magnetic moment show an interesting valleylike profile and their minima are positioned at different Co contents for different Mn concentrations. The ferromagnetic Co-Mn exchange interaction is a short-range effect which is only effective at the nearest-neighbor distance. At this distance, the exchange interaction can be further enhanced by a Mn-rich composition, but it might be destroyed by the lattice distortion due to the martensitic transformation.

Original languageEnglish (US)
Article number013913
JournalJournal of Applied Physics
Volume107
Issue number1
DOIs
StatePublished - Feb 5 2010

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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