Effects of the antiferromagnetic anti-phase domain boundary on the magnetization processes in Ni2Mn(Ga0.5Al0.5) Heusler alloy

R. Y. Umetsu, H. Ishikawa, K. Kobayashi, A. Fujita, K. Ishida, R. Kainuma

Research output: Contribution to journalArticlepeer-review

13 Citations (Scopus)

Abstract

The effects of anti-phase domain (APD) boundaries on the magnetic properties of Ni2Mn(Ga0.5Al0.5) alloy were studied by magnetic measurements and transmission electron microscopic observations. The growth of APDs at 773 K followed the square root law for annealing time. While the saturation magnetization and the Curie temperature were hardly affected by the APD size, the magnetization curve in the specimen with smaller mean APD size became harder, caused by the pinning effect of the magnetic domain walls due to the APD boundaries.

Original languageEnglish
Pages (from-to)41-44
Number of pages4
JournalScripta Materialia
Volume65
Issue number1
DOIs
Publication statusPublished - 2011 Jun

Keywords

  • Annealing time
  • Anti-phase domain boundary
  • Magnetization process
  • NiMn(Ga,Al)
  • Pinning of the magnetic domain wall

ASJC Scopus subject areas

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

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