Open Access1H and 19F NMR relaxation time studies in (NH4)2ZrF6 superionic conductor
Author(s) -
K.J. Mallikarjunaiah,
K. P. Ramesh,
R. Damle
Publication year - 2009
Publication title -
applied magnetic resonance
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.206
H-Index - 44
eISSN - 1613-7507
pISSN - 0937-9347
DOI - 10.1007/s00723-009-0176-2
Subject(s) - chemistry , relaxation (psychology) , ion , spin–lattice relaxation , fluorine 19 nmr , nuclear magnetic resonance , solid state physics , atmospheric temperature range , second moment of area , nuclear magnetic resonance spectroscopy , condensed matter physics , stereochemistry , nuclear quadrupole resonance , thermodynamics , organic chemistry , physics , psychology , social psychology
1H and 19F spin-lattice relaxation times in polycrystalline diammonium hexafluorozirconate have been measured in the temperature range of 10-400 K to elucidate the molecular motion of both cation and anion. Interesting features such as translational diffusion at higher temperatures, molecular reorientational motion of both cation and anion groups at intermediate temperatures and quantum rotational tunneling of the ammonium group at lower temperatures have been observed. Nuclear magnetic resonance (NMR) relaxation time results correlate well with the NMR second moment and conductivity studies reported earlier. © Springer-Verlag 2009
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