Correlations between Elastic Moduli and Covalency in the Alkaline Earth Oxides

抄録

For the alkaline earth oxides a correlation between C₄₄ and dC₄₄⁄dP is shown to exist which is substantially the same as the corresponding one for the alkali halides in a previous paper (J. Phys. Soc. Jpn. 50 (1981) 102). On the other hand, a relation between dC₁₁⁄dP and dC₄₄⁄dP is shown to differ qualitatively from that for the alkali halides. Discussion about origins of these correlations is given.