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Martensitic α↔γ Phase Transition and Ionic Conductivity in "Pure" and Doped LiIO3 Single Crystals

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Abstract:

The polymorphism and anisotropy of electrical, dielectric, and thermophysical properties of “pure” and doped LiIO3 single crystals are studied. The hexagonal a-LiIO3 phase is a 1-D ionic conductor (along the c axis). The anisotropy of the ionic conductivity of the a-phase can be reduced by doping with transitive metals (Fe, Mo, Ni). The martensitic character of the a«g transition is proved. In the γ-phase, only a slight anisotropy of the conductivity is found. The a«g transition is not an ionic-superionic one.

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Periodical:

Materials Science Forum (Volumes 480-481)

Pages:

405-410

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.480-481.405

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Online since:

March 2005

Authors:

Viera Trnovcová, František Hanic, Tatjana Šrámková, Andrej Škubla

Keywords:

Growth in a dc Electrical Field, Ionic Conductivity, Lithium Iodate, Martensitic α↔γ Transition, Permittivity, Phase Transition, Thermal Diffusivity, Transitive Metal Doping

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© 2005 Trans Tech Publications Ltd. All Rights Reserved

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