Static properties of CsNiF3: numerical results, experimental data and soliton bearing models

T. Delica, W.J.M. de Jonge, K. Kopinga, H. Leschke, H. Mikeska

Research output: Contribution to journalArticleAcademicpeer-review

Abstract

The static properties of the S=1 easy-plane ferromagnetic chain system CsNiF3 have been calculated by the numerical Quantum Transfer Matrix method (QTM). An analysis of the relevant experimental data shows that the generally accepted spin Hamiltonian accurately describes the individual chains for J / kB=25 K, D / kB=7.7 K, g=2.1. Deviations between theory and experiment are found at temperatures extending up to several kelvin above the three-dimensional ordering temperature, that are attributed to the coupling between the chains. The QTM results are compared with various analytical results, yielding support for the description of solitary excitations in CsNiF3 by the classical sine-Gordon model, extended to include spin fluctuations out of the easy plane and quantum effects.

Original languageEnglish
Pages (from-to)795-796
Number of pages2
JournalJournal of Magnetism and Magnetic Materials
Volume104-107
Issue numberpart 2
DOIs
Publication statusPublished - 2 Feb 1992

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