TY - JOUR
T1 - Static properties of CsNiF3
T2 - numerical results, experimental data and soliton bearing models
AU - Delica, T.
AU - de Jonge, W.J.M.
AU - Kopinga, K.
AU - Leschke, H.
AU - Mikeska, H.
PY - 1992/2/2
Y1 - 1992/2/2
N2 - 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.
AB - 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.
UR - http://www.scopus.com/inward/record.url?scp=0027107338&partnerID=8YFLogxK
U2 - 10.1016/0304-8853(92)90363-S
DO - 10.1016/0304-8853(92)90363-S
M3 - Article
AN - SCOPUS:0027107338
SN - 0304-8853
VL - 104-107
SP - 795
EP - 796
JO - Journal of Magnetism and Magnetic Materials
JF - Journal of Magnetism and Magnetic Materials
IS - part 2
ER -