期刊
JOURNAL OF ALLOYS AND COMPOUNDS
卷 488, 期 1, 页码 374-379出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.jallcom.2009.08.139
关键词
Ceramics; Ferroelectrics; Crystal structure
The correlation between ionic radii and the lattice constants of orthorhombic perovskites is examined and new empirical formulae for the relationship are derived. As for cubic/pseudocubic perovskites, the lattice constants are largely a function of A-X and B-X bond lengths rather than ionic charge. The average absolute relative error in the predicted a, b, and c lattice constants so derived is expected to be about 0.616%, 1.089%, and 0.714%, respectively; therefore, these formulae are in better agreement with experimental data than those derived by earlier researchers. (C) 2009 Elsevier B.V. All rights reserved.
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