Study of the exchange anisotropy in the quantum chain systems (C6H11NH3)CuCl3and (C6H11NH3)CuBr3by means of (anti) ferromagnetic resonance
- 20 May 1984
- journal article
- Published by IOP Publishing in Journal of Physics C: Solid State Physics
- Vol. 17 (14) , 2583-2594
- https://doi.org/10.1088/0022-3719/17/14/015
Abstract
Ferromagnetic resonance (FMR) measurements on the magnetic quasi-one-dimensional systems (C6H11NH3)CuCl3 (CHAC) and (C6H11NH3)CuBr3 (CHAB) in the region 8< nu <75 GHz and at a temperature of 1.25K are presented. The experimental results can be described quite well by a classical mean-field model assuming that, in a first approximation, the ferromagnetic chains behave like independent entities. A comparison of this model with the experimental results yields accurate values for the exchange anisotropy. These values indicate a pronounced easy-plan anisotropy for CHAB, whereas for CHAC the inferred anisotropy is clearly orthorhombic. These results are in fair agreement with previously reported measurements of magnetisation and specific heat.Keywords
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