High-Pressure Energy Dispersive X-Ray Diffraction Investigation of Lithium-Manganese Spinel

Abstract:

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The formation of the tetragonal high-pressure structure, attributed to the Jahn-Teller distortion, was proved. The c/a axial ratio shows an increasing trend towards a stronger tetragonal distortion at high pressure. Rietveld refinement after the pressure relaxation demonstrates the presence of tetragonal artefacts of the high-pressure structure only for the LiMn2O4 sample compressed in hexagonal boron nitride (h-BN), whereas the sample compressed in silicone reveals the pure cubic phase. Confrontation with the result of the first angle-dispersive diamond-anvil-cell experiment is presented.

Info:

Periodical:

Solid State Phenomena (Volume 130)

Edited by:

Danuta Stróż & Małgorzata Karolus

Pages:

69-72

DOI:

10.4028/www.scientific.net/SSP.130.69

Citation:

P. Piszora "High-Pressure Energy Dispersive X-Ray Diffraction Investigation of Lithium-Manganese Spinel", Solid State Phenomena, Vol. 130, pp. 69-72, 2007

Online since:

December 2007

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$35.00

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