Study of the exchange anisotropy in the quantum chain systems (C6H11NH3)CuCl3 and (C6H11NH3)CuBr3 by means of (anti) ferromagnetic resonance

A. C. Phaff, C.H.W. Swüste, W.J.M. De Jonge, R. Hoogerbeets, A. J. Van Duyneveldt

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Abstract

Ferromagnetic resonance (FMR) measurements on the magnetic quasi-one-dimensional systems (C6H11NH3) CuCl3 (CHAC) and (C6H11NH3)CuBr 3 (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.

Original languageEnglish
Article number015
Pages (from-to)2583-2594
Number of pages12
JournalJournal of Physics C: Solid State Physics
Volume17
Issue number14
DOIs
Publication statusPublished - 1 Dec 1984

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