Molecular Dynamics in Paraelectric Phase of KH2PO4 Crystals Studied by Single Crystal NMR and MAS NMR
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The temperature dependences of the NMR spectrum and the spin-lattice relaxation times in KH2PO4 were investigated via single-crystal NMR and MAS NMR. The stretched-exponential relaxation that occurred because of the distribution of correlation times was indicative of the degree of the distribution of the double-well potential on the hydrogen bond. The behaviors responsible for the strong temperature dependences of the 1H and 31P spin-lattice relaxation times in the rotating frame T1ρ in KH2PO4 are likely related to the reorientational motion of the hydrogen-bond geometry and the PO4 tetrahedral distortion.
Abstract
The temperature dependences of the NMR spectrum and the spin-lattice relaxation times in KH2PO4 were investigated via single-crystal NMR and MAS NMR. The stretched-exponential relaxation that occurred because of the distribution of correlation times was indicative of the degree of the distribution of the double-well potential on the hydrogen bond. The behaviors responsible for the strong temperature dependences of the 1H and 31P spin-lattice relaxation times in the rotating frame T1ρ in KH2PO4 are likely related to the reorientational motion of the hydrogen-bond geometry and the PO4 tetrahedral distortion.
참고문헌 (12)
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