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CATION DIFFUSION IN ALKALINE-EARTH OXIDES

HARDING, JH; SANGSTER, MJL; STONEHAM, AM; (1987) CATION DIFFUSION IN ALKALINE-EARTH OXIDES. J PHYS C SOLID STATE , 20 (32) 5281 - 5292. 10.1088/0022-3719/20/32/014. Green open access

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Abstract

Absolute jump rates for cation-vacancy interchanges in MgO, CaO, SrO and BaO are calculated from a set of model inter-ionic potentials. Internal energies and vibrational entropies over a wide range of temperatures (i.e. at expansions which within the models correspond to these temperatures in the quasi-harmonic approximation) are evaluated and, from these, migration enthalpies and pre-exponential frequency factors are deduced. Correlations between these two diffusion parameters for the family of oxides are investigated.

Type: Article
Title: CATION DIFFUSION IN ALKALINE-EARTH OXIDES
Open access status: An open access version is available from UCL Discovery
DOI: 10.1088/0022-3719/20/32/014
Publisher version: http://dx.doi.org/10.1088/0022-3719/20/32/014
Language: English
Additional information: Text made available to UCL Discovery by kind permission of IOP Publishing, 2012
UCL classification: UCL > Provost and Vice Provost Offices
UCL > Provost and Vice Provost Offices > UCL BEAMS
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > London Centre for Nanotechnology
URI: http://discovery.ucl.ac.uk/id/eprint/91191
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