Magnetization reversal in weak ferrimagnets and canted antiferromagnets

H. Kageyama, D. I. Khomskii, R. Z. Levitin, M. M. Markina, T. Okuyama, T. Uchimoto, A. N. Vasil'ev

Research output: Contribution to journalConference article

16 Citations (Scopus)

Abstract

In some ferrimagnets the total magnetization vanishes at a certain compensation temperature T*. In weak magnetic fields, the magnetization can change sign at T* (the magnetization reversal). Much rarer is observation of ferrimagnetic-like response in canted antiferromagnets, where the weak ferromagnetic moment is due to the tilting of the sublattice magnetizations. The latter phenomenon was observed in nickel (II) formate dihydrate Ni(HCOO)2·2H2O. The observed weak magnetic moment increases initially below TN = 15.5K, equals zero at T* = 8.5K and increases again at lowering temperature. The sign of the low-field magnetization at any given temperature is determined by the sample's magnetic prehistory and the signs are opposite to each other at T < T* and T* < T < TN.

Original languageEnglish
Pages (from-to)445-451
Number of pages7
JournalJournal of Magnetism and Magnetic Materials
Volume262
Issue number3
DOIs
Publication statusPublished - 2003 Jun 1
EventHanoi International Symposium - Hanoi, Viet Nam
Duration: 2002 Sep 302002 Sep 30

Keywords

  • Compensation point
  • Magnetization reversal
  • Ni(HCOO)·2HO
  • Weak ferrimagnetism

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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