Magnetic transitions in CsMnCl3·2H2O studied by magnetostriction and magnetothermal techniques

G. J. Butterworth, J. A. Woollam, P. Aron

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Abstract

Magnetic phase transitions in the orthorhombic antiferromagnet CsMnCl3·2H2O (TN = 4.88 K have been examined by magnetostriction and magnetothermal methods. Dimensional changes along the principal axes were measured as a function of temperature and applied magnetic field up to 100 kOe in the antiferromagnetic, spin-flopped and paramagnetic phases and through the transitions between these states. In the antiferromagnetic phase a power-law field dependence of the linear strains was found, ε ∝ Hn, with the exponent n varying between 2.0 and 2.6, according to temperature and direction of observation. For low fields the volume strain varies approximately quadratically with applied field. At the antiferromagnetic spin-flop transition the linear and volume magnetostrictions show characteristic anomalies which allow precise identification of the critical field. An observed hysteresis of about 1% at this transition is believed to be connected with its first-order character.

Original languageEnglish (US)
Pages (from-to)547-562
Number of pages16
JournalPhysica
Volume70
Issue number3
DOIs
StatePublished - Dec 15 1973

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ASJC Scopus subject areas

  • Engineering(all)

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