Coexisting ferro- and antiferromagnetism in Ni2MnAl Heusler alloys

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Acet M., Duman E., Wassermann E., Manosa L., Planes A.

JOURNAL OF APPLIED PHYSICS, vol.92, no.7, pp.3867-3871, 2002 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 92 Issue: 7
  • Publication Date: 2002
  • Doi Number: 10.1063/1.1504498
  • Journal Name: JOURNAL OF APPLIED PHYSICS
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.3867-3871
  • Ankara University Affiliated: No

Abstract

The structural and magnetic properties of stoichiometric Ni2MnAl are studied to clarify the conditions for ferromagnetic and antiferromagnetic ordering claimed to occur in this compound. X-ray and magnetization measurements show that although a single phase B2 structure can be stabilized at room temperature, a single L2(1) phase is not readily stabilized, but rather a mixed L2(1)+B2 state occurs. The mixed state incorporates ferromagnetic and antiferromagnetic parts for which close-lying Curie and a Neel temperatures can be identified from magnetization measurements. (C) 2002 American Institute of Physics.