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Proton spin lattice relaxation in ferroelectric ammonium iodate

Shenoy, RK and Ramakrishna, J (1983) Proton spin lattice relaxation in ferroelectric ammonium iodate. In: Ferroelectrics, 48 (1). pp. 309-312.

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Proton spin lattice relaxation in powdered ammonium iodate has been measured at 10 MHz in the temperature range 100-425 K. The results are typical of a hindered solid with motions freezing around 77 K. A discontinuity in the $T_1$ vs T plot at $T_c$, characteristic of a first order phase transition, was observed suggesting that the ammonium ions are significantly affected at the phase transition. The activation energy is not much different in the two phases suggesting that the structures in the two phases are close to each other.

Item Type: Journal Article
Publication: Ferroelectrics
Publisher: Taylor & Francis
Additional Information: Copyright of this article belongs to Taylor & Francis.
Department/Centre: Division of Physical & Mathematical Sciences > Physics
Date Deposited: 16 Jul 2008
Last Modified: 27 Aug 2008 13:35
URI: http://eprints.iisc.ac.in/id/eprint/15037

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