Phase Transitions and Ion Conductivity in NASICON-Type Compounds Li1±XZr2-XMX(PO4)3, M = Ta, Nb, Y, Sc, In

I.A. Stenina; M.N. Kislitsyn; I.Yu. Pinus; S.M. Haile; Andrew B. Yaroslavtsev

doi:10.4028/www.scientific.net/DDF.249.255

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Phase Transitions and Ion Conductivity in NASICON-Type Compounds Li_1±XZr_2-XM_X(PO₄)₃, M = Ta, Nb, Y, Sc, In
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HomeDefect and Diffusion ForumDefect and Diffusion Forum Vol. 249Phase Transitions and Ion Conductivity in...

Phase Transitions and Ion Conductivity in NASICON-Type Compounds Li_1±XZr_2-XM_X(PO₄)₃, M = Ta, Nb, Y, Sc, In

Abstract:

Ionic conductivity and phase transitions of lithium-zirconium phosphates, Li1±XZr2- XMX(PO4)3 (M = Ta, Nb, Y, Sc, In), with NASICON structure were studied using X-ray powder diffraction, calorimetry, 31P and 7Li NMR and impedance spectroscopy. Triclinic-rhombohedral phase transition in these materials occurs in a wide temperature range at coexistence of both phases. Unusual change of LiZr2(PO4)3 lattice parameters with temperature increase was found. During heating of this compound parameter “a” significantly decreases.

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Periodical:

Defect and Diffusion Forum (Volume 249)

Pages:

255-262

DOI:

https://doi.org/10.4028/www.scientific.net/DDF.249.255

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Online since:

January 2006

Authors:

I.A. Stenina, M.N. Kislitsyn, I.Yu. Pinus, S.M. Haile, Andrew B. Yaroslavtsev

Keywords:

Heterovalent Doping, Ionic Conductivity, Lithium Zirconium Phosphate, Nasicon, Phase Transition

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