Abstract
The temperature dependences of the proton-magnetization spin-lattice recovery functions after a saturating pulse sequence were measured in phases I, II, and III of powdered ${\mathrm{CsHSO}}_{4},$ and the corresponding stretched exponents and the proton ${T}_{1},$ ${T}_{1\ensuremath{\rho}},$ and ${T}_{2}$ parameters were determined. The recovery of the proton magnetization in the spin-lattice relaxation time experiment is nonexponential in phases I and II, but becomes monoexponential in the high-temperature fast-ion conducting phase III. The observed value of the stretched exponent $\ensuremath{\alpha}\ensuremath{\sim}0.5$ in phases I and II proves the existence of a local-polarization distribution function characteristic for orientational glasses and the presence of random fields or random bonds.
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