Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1816772 | Physica B: Condensed Matter | 2006 | 4 Pages |
Abstract
Magnetic properties of organic compounds with two-dimensional distorted triangular lattice structure, βâ²-X[Pd(dmit)2]2 are investigated by the muon spin relaxation (μSR) method, where X is counter cation. We have previously reported that the X=Me4P salt (1, Me=CH3) shows a very sharp antiferromagnetic (AFM) transition at 39.3 K. We have carried out μSR measurements on other two Pd(dmit)2 salts: the X=Et2Me2P salt (2, Et=C2H5) and the Et2Me2Sb salt (3). In compound 2, an AFM transition at lower TN=15K with a smaller enhancement of the muon spin relaxation is observed, indicating a larger effect of the spin frustration than in 1. The zero-field μSR time spectra of 3 showed an enhancement of the relaxation below â¼80K, but did not show precessions. Recently, it has been suggested that this salt undergoes a phase transition to a charge-separated nonmagentic state. It is expected that the enhancement of the relaxation is related to the spin localization attributable to the charge separation.
Related Topics
Physical Sciences and Engineering
Physics and Astronomy
Condensed Matter Physics
Authors
S. Ohira, M. Tamura, R. Kato, M. Iwasaki,