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Issue 21, 2008

High-pressure metaelastic properties of LixMn3−xO4 (x = 0.87, 0.94, 1.00)

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Abstract

High-pressure behaviour of LixMn3−xO4 has been investigated by the in situsynchrotron diffraction method. It has been found that the pressure-induced structural changes lead to the tetragonal phase with c/a > 1 in all materials irrespective of their initial phase. Formation of the tetragonal high-pressure structure is attributed to the Jahn–Teller distortion. The c/a axial ratio increases with the pressure applied for all samples studied. Coexistence of three crystal phases in the transition region has been experimentally confirmed and refinement of their structural parameters has been carried out by the Rietveld method. The effect of the transformation pressure on the pressure medium and the reorientation of MnO6 octahedra have suggested metaelastic character of this transition. Potential applications of the stress-induced transformation in technology of thin-layer batteries have been proposed.

Graphical abstract: High-pressure metaelastic properties of LixMn3−xO4 (x = 0.87, 0.94, 1.00)

Article information


Submitted
21 Dec 2007
Accepted
07 Mar 2008
First published
31 Mar 2008

J. Mater. Chem., 2008,18, 2447-2452
Article type
Paper

High-pressure metaelastic properties of LixMn3−xO4 (x = 0.87, 0.94, 1.00)

P. Piszora, W. Nowicki and J. Darul, J. Mater. Chem., 2008, 18, 2447 DOI: 10.1039/B719682B

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