Specific heat of an S = 1 quasi-1D bond alternating antiferromagnet in a magnetic field

Naoyuki Tateiwa, Masayuki Hagiwara, Hiroko Aruga-Katori, Tatsuo C. Kobayashi

Research output: Contribution to journalArticle

13 Citations (Scopus)

Abstract

We report the results of specific heat measurements in a magnetic field on single crystal samples of the S = 1 quasi-1D bond alternating antiferromagnet Ni(C9H24N4)NO2(ClO4). The compound has the singlet ground state with an excitation energy gap and the gap closes by application of magnetic field (Hc). We observed a sharp peak corresponding to the long-range ordering above Hc both parallel and perpendicular to the chain at low temperatures. The temperature-magnetic field phase diagram is discussed in comparison with those of the Haldane system Ni(C5H14N2) 2N3(PF6).

Original languageEnglish
Pages (from-to)1209-1210
Number of pages2
JournalPhysica B: Condensed Matter
Volume329-333
Issue numberII
DOIs
Publication statusPublished - May 2003
Externally publishedYes

Keywords

  • Bond alternating antiferromagnet
  • Long-range-ordering
  • Specific heat
  • Temperature-magnetic field phase diagram

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Electrical and Electronic Engineering

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