Abstract
Resonance frequencies from the <TEX>$^{113}Cd$</TEX> and <TEX>$^{133}Cs$</TEX> nuclear magnetic resonance (NMR) spectra for the <TEX>$CsCdBr_3$</TEX> single crystal were measured at varying temperatures by the static NMR method. The temperature-dependent changes of these frequencies are related to the changing structural geometry of the <TEX>${CdBr_6}^{4-}$</TEX> units, which affects the environment of <TEX>$^{133}Cs$</TEX>. The spin-lattice relaxation rates (<TEX>$1/T_1$</TEX>) for the <TEX>$^{113}Cd$</TEX> and <TEX>$^{133}Cs$</TEX> nuclei were measured in order to obtain detailed information about the dynamics of <TEX>$CsCdBr_3$</TEX> crystals. The dominant relaxation mechanisms for <TEX>$^{113}Cd$</TEX> and <TEX>$^{133}Cs$</TEX> nuclei are direct single-phonon and Raman spin-phonon processes, respectively.
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