J. Phys. IV France
Volume 114, April 2004
Page(s) 383 - 384

J. Phys. IV France
114 (2004) 383
DOI: 10.1051/jp4:2004114090

Anisotropic triangular lattice antiferromagnets, [ Pd(dmit) 2] salts - frustration and dimensional crossover in spin-1/2 Heisenberg systems

M. Tamura and R. Kato

Condensed Molecular Materials Lab., RIKEN, JST-CREST, Wako, Saitama 351-0198, Japan

A way to relate the observed temperature dependence of magnetic susceptibility ( $\chi )$ of frustrated triangular antiferromagnets, the [ Pd(dmit) 2] salts, to the deviation from the regular triangular lattice model, is presented from the phenomenological viewpoints. Application to the experimental data affords a measure of the degree of frustration dominated by the intralayer anisotropy depending on the counterion. Key words. Pd(dmit) 2 - triangular lattice - frustration - magnetic susceptibility - crossover.

© EDP Sciences 2004