Comment on "Prediction of lattice constant in cubic perovskites"

Details Comment on "Prediction of lattice constant in cubic perovskites" Comment on "Prediction of lattice constant in cubic perovskites"

2007-03-16

arxiv.org/abs/cond-mat/0703451v1

Physics

Condensed Matter

Materials Science

Scientific paper

10.1016/j.jpcs.2007.03.050

In a recent work by Jiang et al. [J. Phys. Chem. Solids 67 (2006) 1531-1536], the interrelationship between lattice constant, ionic radii and tolerance factor of cubic perovskites has been established and an empirical equation was obtained. However, the assumption of incorrect ionic coordination led to an incorrect mathematical expression even though the average relative errors between predicted and observed lattice constants of 132 materials were below 1%. Here, corrected coefficients for that empirical expression are obtained, which would likely be useful for investigation of general perovskite materials.

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