Scaling behaviour of magnetic transitions in Ni3V2O8

P. Kharel, A. Kumarasiri, A. Dixit, N. Rogado, R. J. Cava, G. Lawes

Research output: Contribution to journalArticlepeer-review

10 Scopus citations

Abstract

We have studied phase transitions in multiferroic Ni3V2O8, through dielectric measurements and by investigating the effects of Zn doping. The divergence of the dielectric constant near TL = 6.4 K can be approximately fit by power law behaviour, but exhibits different critical exponents above and below TL. The two higher temperature magnetic transitions in (Ni1-xZnx)3V2O8, are strongly suppressed as the Zn doping fraction x is increased. The rates of the suppression of both TH and TL with x are consistent with two-dimensional spin systems, with the suppression of TH consistent with Ising spins and the suppression of TL consistent with Heisenberg spins.

Original languageEnglish (US)
Pages (from-to)1923-1932
Number of pages10
JournalPhilosophical Magazine
Volume89
Issue number22-24
DOIs
StatePublished - Jan 2009

All Science Journal Classification (ASJC) codes

  • Condensed Matter Physics

Keywords

  • Antiferromagnet
  • Critical exponent
  • Doping
  • Magnetoelectric
  • Multiferroic
  • Phase transitions
  • Two-dimensional

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