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, cilt.92, sa.7, ss.3867-3871, 2002 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 92 Sayı: 7
  • Basım Tarihi: 2002
  • Doi Numarası: 10.1063/1.1504498
  • Dergi Adı: JOURNAL OF APPLIED PHYSICS
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.3867-3871
  • Ankara Üniversitesi Adresli: Hayır

Özet

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.