Evidence for preferential rearrangements of martensite variants by magnetic field in antiferromagnetic CoO crystal

Research output: Journal Publications and ReviewsRGC 21 - Publication in refereed journalpeer-review

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Author(s)

  • Z. H. Nie
  • T. Terai
  • Y. D. Wang
  • D. E. Brown
  • T. Kakeshita

Detail(s)

Original languageEnglish
Article number051914
Journal / PublicationApplied Physics Letters
Volume95
Issue number5
Publication statusPublished - 2009
Externally publishedYes

Abstract

The synchrotron high-energy x-ray diffraction provides the direct crystallographic evidence for the magnetic-field-driven preferential rearrangements of martensite multivariants in antiferromagnetic CoO crystal. When a magnetic field was incrementally applied up to 6 T on the CoO single crystal cooled below the Ńel temperature, the martensite variants with the magnetization easy-axis parallel to the magnetic field direction (H) were consumed, while the variants with magnetic moments perpendicular to H were enhanced. The microscopic origin for the observation is discussed, which provides important information for understanding the magnetic-field-driven strain observed in the antiferromagnetic alloys, with a selection principle on martensite variants different from that found in the ferromagnetic shape memory alloys. © 2009 American Institute of Physics.

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Citation Format(s)

Evidence for preferential rearrangements of martensite variants by magnetic field in antiferromagnetic CoO crystal. / Nie, Z. H.; Ren, Y.; Terai, T. et al.
In: Applied Physics Letters, Vol. 95, No. 5, 051914, 2009.

Research output: Journal Publications and ReviewsRGC 21 - Publication in refereed journalpeer-review