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Proton NMR study of bis(tetramethylammonium) tetrachlorozincate at high pressures and low temperatures

Arumugam, S and Kumari, Murthy and Srinivasan, R and Bhat, SV (1987) Proton NMR study of bis(tetramethylammonium) tetrachlorozincate at high pressures and low temperatures. In: Phase Transitions, 9 (3). pp. 259-268.

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Abstract

Wide-line proton NMR studies on polycryst. bis(tetramethylammonium) tetrachlorozincate were carried out at high hydrostatic pressures up to 15 kbar at 77-300 K and at ambient pressure down to 4.2 K. A 2nd-moment transition is obsd. to occur starting around 161 K, the temp. for the V-VI phase transition. This transition temp. has a neg. pressure coeff. up to 2 kbar, beyond which it changes sign. At 77 K, the 2nd moment decreases to 4 kbar and then increases again as a function of pressure. The results are explained in terms of the dynamics of the $N(CH_3)_4$ groups.

Item Type: Journal Article
Additional Information: Copyright belongs to Taylor and Francis Group
Department/Centre: Division of Physical & Mathematical Sciences > Physics
Date Deposited: 19 Mar 2008
Last Modified: 27 Aug 2008 13:16
URI: http://eprints.iisc.ernet.in/id/eprint/13424

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