DOI QR코드

DOI QR Code

Molecular Dynamics in Paraelectric Phase of KH2PO4 Crystals Studied by Single Crystal NMR and MAS NMR

  • Paik, Younkee (Daegu Center, Korea Basic Science Institute) ;
  • Chang, Celesta L. (Department of Physics, Yonsei University)
  • 투고 : 2013.04.05
  • 심사 : 2013.06.10
  • 발행 : 2013.06.20

초록

The temperature dependences of the NMR spectrum and the spin-lattice relaxation times in $KH_2PO_4$ 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 $^{31}P$ spin-lattice relaxation times in the rotating frame $T_{1{\rho}}$ in $KH_2PO_4$ are likely related to the reorientational motion of the hydrogen-bond geometry and the $PO_4$ tetrahedral distortion.

키워드

참고문헌

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피인용 문헌

  1. 31P, 1H NMR Relaxation and Molecular Mobility in Layered α-Zirconium Phosphate: Variable-Temperature NMR Experiments vol.121, pp.1, 2017, https://doi.org/10.1021/acs.jpcc.6b11247