Abstract
In this Letter we present the two expressions relating the bond-stretching force constant ( α in N/m) and bond-bending force constant ( β in N/m) for the A IIIB V and A IIB VI semiconductors with the product of ionic charges ( Z 1 Z 2 ) and nearest neighbor distance d (Å). Interatomic force constants of these compounds exhibit a linear relationship when plotted on a log–log scale against the nearest neighbor distance d (Å), but fall on different straight lines according to the ionic charge product of the compounds. A fairly good agreement has been found between the observed and calculated values of the α and β for binary tetrahedral semiconductors.
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