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Correlation between ionic charge and the lattice constant of cubic perovskite solids
Author(s) -
Verma A. S.,
Kumar A.,
Bhardwaj S. R.
Publication year - 2008
Publication title -
physica status solidi (b)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.51
H-Index - 109
eISSN - 1521-3951
pISSN - 0370-1972
DOI - 10.1002/pssb.200844072
Subject(s) - ionic radius , ionic bonding , lattice constant , valence (chemistry) , lattice (music) , lattice energy , chemistry , halide , charge ordering , ionic potential , perovskite (structure) , ion , metal , thermodynamics , crystallography , charge (physics) , inorganic chemistry , physics , crystal structure , diffraction , quantum mechanics , organic chemistry , acoustics
In this paper we present lattice constant values for cubic perovskite solids with the product of ionic charges and average ionic radii r av (Å). The lattice constant of these compounds exhibit a linear relationship when plotted on a log–log scale against the average ionic radii r av (Å), but fall on different straight lines according to the ionic charge product of the compounds. We have applied the proposed relation to ABX 3 (A: large cation with different valence, B: transition metal and X: oxides and halides) and found a better agreement with the experimental data as compared to the values evaluated by earlier researchers. (© 2008 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)