TEM studies of crystallographic and magnetic microstructures in Ni-based ferromagnetic shape memory alloys

Yasukazu Murakami, D. Shindo, K. Kobayashi, K. Oikawa, R. Kainuma, K. Ishida

Research output: Contribution to journalArticle

19 Citations (Scopus)

Abstract

Magnetic domains in the L21 phase of Ni2Mn(Al,Ga) - a series of ferromagnetic Heusler alloys, which can undergo martensitic transformations in cases of off-stoichiometric compositions - have been studied by the defocus mode of Lorentz microscopy. One-to-one correspondence was observed between the magnetic domain walls and antiphase boundaries (APBs). The result indicates that the APBs are strong pinning sites for the motion of magnetic domain walls. Effects of applying a weak magnetic field to the magnetic domains were studied by in situ observations of Lorentz microscopy.

Original languageEnglish
Pages (from-to)1050-1053
Number of pages4
JournalMaterials Science and Engineering A
Volume438-440
Issue numberSPEC. ISS.
DOIs
Publication statusPublished - Nov 25 2006

Fingerprint

Magnetic domains
shape memory alloys
magnetic domains
Shape memory effect
Transmission electron microscopy
transmission electron microscopy
microstructure
Microstructure
antiphase boundaries
Domain walls
domain wall
Microscopic examination
microscopy
Martensitic transformations
martensitic transformation
Magnetic fields
Chemical analysis
magnetic fields

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

Cite this

TEM studies of crystallographic and magnetic microstructures in Ni-based ferromagnetic shape memory alloys. / Murakami, Yasukazu; Shindo, D.; Kobayashi, K.; Oikawa, K.; Kainuma, R.; Ishida, K.

In: Materials Science and Engineering A, Vol. 438-440, No. SPEC. ISS., 25.11.2006, p. 1050-1053.

Research output: Contribution to journalArticle

Murakami, Yasukazu ; Shindo, D. ; Kobayashi, K. ; Oikawa, K. ; Kainuma, R. ; Ishida, K. / TEM studies of crystallographic and magnetic microstructures in Ni-based ferromagnetic shape memory alloys. In: Materials Science and Engineering A. 2006 ; Vol. 438-440, No. SPEC. ISS. pp. 1050-1053.
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