Superionic Behavior and Phase Transition in a Vanthoffite Mineral

Sharma, Vaishali and Swain, Diptikanta and Row, Tayur N Guru (2017) Superionic Behavior and Phase Transition in a Vanthoffite Mineral. In: INORGANIC CHEMISTRY, 56 (11). pp. 6048-6051.

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Abstract

Crystals of a Vanthoffite mineral, Na6Mn(SO4)(4), grown from an aqueous solution, belong to a monoclinic system, P2(1)/c, Z = 2, at ambient temperature. Thermal analysis indicates a phase transition at 455 degrees C, which was substantiated by in situ variable-temperature powder X-ray diffraction. The structure is orthorhombic (Pmmm) after the phase transition and reverts to the monoclinic system upon cooling. Variable-temperature ionic conductivity measurements show a significantly higher value (similar to 10(-2) S cm(-1)) beyond the phase transition temperature.

Item Type:	Journal Article
Publication:	INORGANIC CHEMISTRY
Additional Information:	Copy right for this article belongs to the AMER CHEMICAL SOC, 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
Department/Centre:	Division of Chemical Sciences > Solid State & Structural Chemistry Unit
Date Deposited:	28 Jun 2017 06:26
Last Modified:	28 Jun 2017 06:26
URI:	http://eprints.iisc.ac.in/id/eprint/57274

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