Shape memory ferromagnets

A. N. Vasil'ev, V. D. Buche'nikov, T. Takagi, V. V. Khovaǐlo, É I. Éstrin

Research output: Contribution to journalReview article

215 Citations (Scopus)

Abstract

In ferromagnetic alloys with shape memory large reversible strains can be obtained by rearranging the martensitic domain structure by a magnetic field. Magnetization through displacement of domain walls is possible in the pre sence of high magnetocrystalline anisotropy, when martensitic structure rearrangement is energetically favorable compared to the reorientation of magnetic moments. In ferromagnetic Heusler alloys Ni2+xMn1-xGa the Curie temperature exceeds the martensitic transformation temperature. The fact that these two temperatures are close to room temperature offers the possibility of magnetically controlling the shape and size of ferromagnets in the martensitic state. In N2+xMn1-xGa single crystals, a reversible strain of ∼ 6 % is obtained in fields of ∼1 T.

Original languageEnglish
Pages (from-to)559-588
Number of pages30
JournalPhysics-Uspekhi
Volume46
Issue number6
DOIs
Publication statusPublished - 2003 Jun

ASJC Scopus subject areas

  • Physics and Astronomy(all)

Fingerprint Dive into the research topics of 'Shape memory ferromagnets'. Together they form a unique fingerprint.

  • Cite this

    Vasil'ev, A. N., Buche'nikov, V. D., Takagi, T., Khovaǐlo, V. V., & Éstrin, É. I. (2003). Shape memory ferromagnets. Physics-Uspekhi, 46(6), 559-588. https://doi.org/10.1070/PU2003v046n06ABEH001339