Effect of the martensite twin structure on the deformation induced magnetic avalanches in Ni2MnGa single crystalline samples

L. Daróczi, Szilvia Gyöngyösi, László Z. Tóth, D. Beke

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

The noise energy versus strain functions, obtained from bending deformation induced magnetic noises, are different for different twin structures of Ni2MnGa single crystals and have two characteristically different stages: unipolar magnetic signals, reflecting the elastic strain induced rearrangement of magnetic domains, as well as bipolar signals, belonging to rearrangements of the martensite variant structure. The critical exponents of the probability density functions of energy and amplitude were larger for samples with highly mobile twin II boundaries than for the other two samples in the bipolar regime. The noise energy is considerably smaller for the motion of twin II boundaries.

Original languageEnglish
Pages (from-to)161-164
Number of pages4
JournalScripta Materialia
Volume114
DOIs
Publication statusPublished - Mar 15 2016

Keywords

  • Magnetic noise
  • NiMnGa
  • Twin II boundaries
  • Twin rearrangement

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics

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