Journal of the Korean Magnetic Resonance Society (한국자기공명학회논문지)

Korean Magnetic Resonance Society (한국자기공명학회)
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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)
  • Received : 2013.04.05
  • Accepted : 2013.06.10
  • Published : 2013.06.20
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Abstract

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.

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References

  1. M. S. Webb, D. Eimerl, S. P. Velsko, J. Opt. Soc. Am. B 9, 1118. (1992). https://doi.org/10.1364/JOSAB.9.001118
  2. M. Badrouj, R. Malekfar, J. Raman Spectroscopy 38, 1089. (2007). https://doi.org/10.1002/jrs.1715
  3. I. V. Shnaidshtein, B. A. Strukov, Phys. Solid State 48, 2142. (2006). https://doi.org/10.1134/S1063783406110187
  4. E. V. Colla, A. V. Fokin, Y. A. Kumzerov, Solid State Commun. 103, 127. (1997). https://doi.org/10.1016/S0038-1098(97)00132-4
  5. J. C. Slater, J. Chem. Phys. 9, 16. (1941). https://doi.org/10.1063/1.1750821
  6. R. Blinc, J. Pirs, J. Chem. Phys. 54, 1535. (1971). https://doi.org/10.1063/1.1675051
  7. J. Grunberg, S. Levin, I. Pelah, D. Gerlich, Phys. Status Solid B 49, 857. (1972). https://doi.org/10.1002/pssb.2220490248
  8. C. E. Botez, D. Carbajal, V. A. K. Adiraju, J. Tackett, R. R. Chianelli, J. Phys. Chem. Solids 71, 1576. (2010). https://doi.org/10.1016/j.jpcs.2010.08.004
  9. K. S. Lee, J. Phys. Chem. Solids 57, 333. (1996). https://doi.org/10.1016/0022-3697(95)00233-2
  10. E. Ortiz, A. Vargas, B. E. Mellander, Phys. Chem. Solids 59, 333. (1998).
  11. J. Selger, V. Zagar, R. Blinc, V. H. Schmidt, J. Chem. Phys. 88, 3260. (1988). https://doi.org/10.1063/1.453921
  12. R. K. Harris, Nuclear Magnetic Resonance Spectroscopy, Pitman Pub. INC, London, 1983.

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