Pressure-induced stabilization of an intermediate phase in the triangular lattice antiferromagnet CsNiCl3

M. Ito, T. Asano, Tatsuya Kawae, Y. Ajiro, K. Takeda

Research output: Contribution to journalLetter

4 Citations (Scopus)

Abstract

Pressure effects on the magnetic properties of the triangular lattice Heisenberg antiferromagnet CsNiCl3 have been studied through heat capacity measurements up to the pressure of 6.6 kbar. With increasing pressure, two successive phase transitions at TN1 = 4.74 K and TN2 = 4.24 K at 0 kbar, which result from a small Ising-type anisotropy of S = 1 moments on Ni2+ ions, shift to higher temperatures in proportion to the pressure. Moreover, the pressure dependence of the entropy indicates that the intermediate phase AF1 (TN2 < T < TN1) is stabilized. These results suggest that the pressurization enhances the Ising-type anisotropy in the spin moments.

Original languageEnglish
JournalJournal of Physics Condensed Matter
Volume15
Issue number44
DOIs
Publication statusPublished - Nov 12 2003

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Stabilization
stabilization
moments
anisotropy
Anisotropy
pressure effects
pressure dependence
Pressure effects
Pressurization
proportion
specific heat
entropy
magnetic properties
Specific heat
Magnetic properties
Entropy
Phase transitions
shift
Ions
ions

All Science Journal Classification (ASJC) codes

  • Condensed Matter Physics
  • Electronic, Optical and Magnetic Materials

Cite this

Pressure-induced stabilization of an intermediate phase in the triangular lattice antiferromagnet CsNiCl3 . / Ito, M.; Asano, T.; Kawae, Tatsuya; Ajiro, Y.; Takeda, K.

In: Journal of Physics Condensed Matter, Vol. 15, No. 44, 12.11.2003.

Research output: Contribution to journalLetter

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AU - Ito, M.

AU - Asano, T.

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AU - Ajiro, Y.

AU - Takeda, K.

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AB - Pressure effects on the magnetic properties of the triangular lattice Heisenberg antiferromagnet CsNiCl3 have been studied through heat capacity measurements up to the pressure of 6.6 kbar. With increasing pressure, two successive phase transitions at TN1 = 4.74 K and TN2 = 4.24 K at 0 kbar, which result from a small Ising-type anisotropy of S = 1 moments on Ni2+ ions, shift to higher temperatures in proportion to the pressure. Moreover, the pressure dependence of the entropy indicates that the intermediate phase AF1 (TN2 < T < TN1) is stabilized. These results suggest that the pressurization enhances the Ising-type anisotropy in the spin moments.

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