Specific Features of Jahn-Teller Structure Phase Transitions in Nanocrystalline Materials

Abstract:

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Specific features of the structural phase transitions of the first order were investigated in nanosized crystals with Jahn-Teller ions. As an example the phase transitions of martensite type with changes in symmetry from a cubic to a tetragonal one have been considered. The Kanamori model was used to take into account the size of nanocrystallites and the distribution of cations over non-equivalent crystallographic sublattices in such systems. It was shown the temperature and the latent heat of the transition decrease significantly for the nanoscaled grains. A possibility of multi-phase state for nanocrystalline materials was considered.

Info:

Periodical:

Defect and Diffusion Forum (Volumes 283-286)

Edited by:

Andreas Öchsner, Graeme E. Murch and Ali Shokuhfar

Pages:

53-58

DOI:

10.4028/www.scientific.net/DDF.283-286.53

Citation:

A. Y. Fishman et al., "Specific Features of Jahn-Teller Structure Phase Transitions in Nanocrystalline Materials", Defect and Diffusion Forum, Vols. 283-286, pp. 53-58, 2009

Online since:

March 2009

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Price:

$35.00

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