NDLI: Spin dynamics in a 3D Heisenberg ferromagnet. III. Influence of exchange anisotropy in the critical region: T>Tc, B=O

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Spin dynamics in a 3D Heisenberg ferromagnet. III. Influence of exchange anisotropy in the critical region: T>Tc, B=O

Content Provider	Scilit
Author	Labrujere, J. Velzen, G. Van Klaassen, T. O. Poulis, N. J.
Copyright Year	1982
Description	Journal: Journal of Physics C: Solid State Physics For pt.II see ibid., vol.15, p.999 (1982). An introduction to the experimental and theoretical research of spin dynamics in the critical region of a 3D (weakly anisotropic) Heisenberg ferromagnet is presented. Nuclear spin lattice relaxation times $(T_{1}$) which have been measured in $Rb_{2}CuBr.2H_{2}ORb_{2}CuBr_{4}.2H_{2}$ for $T>T_{c}$, B=0, are described with a phenomenological model for the spin correlation functions. The temperature dependence as well as the absolute values of $T_{1}$ are described very well by this (hydrodynamic) model. The small anisotropy in the exchange interaction is found to determine strongly the dynamic behaviour near $T_{c}$.
Related Links	http://iopscience.iop.org/article/10.1088/0022-3719/15/31/016/pdf
Ending Page	6410
Page Count	8
Starting Page	6403
ISSN	00223719
DOI	10.1088/0022-3719/15/31/016
Journal	Journal of Physics C: Solid State Physics
Issue Number	31
Volume Number	15
Language	English
Publisher	IOP Publishing
Publisher Date	1982-11-10
Access Restriction	Open
Subject Keyword	Journal: Journal of Physics C: Solid State Physics Condensed Matter Physics Rb2cubr.2h2orb2cubr4.2h2
Content Type	Text
Resource Type	Article
Subject	Physics and Astronomy Condensed Matter Physics Engineering

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