Successive spin orderings of tungstate-bridged Li2Ni(WO4)2 of spin 1
Journal
Journal of Physics Condensed Matter
Journal Volume
27
Journal Issue
45
Pages
1-8
Date Issued
2015
Author(s)
Panneer Muthuselvam, I.
Sankar, R.
Ushakov, A. V.
Chen, W. T.
Narsinga Rao, G.
Streltsov, S. V.
Karna, S. K.
Zhao, L.
Wu, M. K.
Abstract
Magnetic, thermodynamic, and dielectric properties of Li2Ni(WO4)2 of S = 1 system have been studied using magnetic susceptibility, specific heat, and dielectric constant measurements. The magnetic orderings can be identified in three stages, including a short range magnetic ordering indicated by the rounded �q(T) peak with maximum at ��20 K, and signatures of two successful antiferromagnetic long range orderings near T(N1) ~ 18 K and T(N2) ~ 13 K revealed by the d(�q(T)) /d(T) peaks. The successive long range magnetic orderings are related to the quasi triangular symmetry breaking in the ac- and bc-planes and to the change of the dielectric constant, suggesting the presence of spin-phonon coupling. The specific heat and magnetic entropy analysis for Li2Ni(WO4)2 shows the existence of a significant low dimensional magnetic correlations at high temperature and confirms the long range three-dimensional (3D) behavior of magnetic orderings below T(N1) and T(N2).
Publisher
Institute of Physics Publishing
Type
journal article