Accession Number : AD0282132

Title :   PRESSURE DERIVATIVES OF THE ELASTIC CONSTANTS OF CADMIUM.

Descriptive Note : Technical rept. no. 6 on Solid State Physics Program,

Corporate Author : CASE INST OF TECH CLEVELAND OHIO

Personal Author(s) : Corll,J. A.

Report Date : JUN 1962

Pagination or Media Count : 33

Abstract : The pressure derivatives of the elastic stiffness constants of cadmium have been measured by the ultrasonic pulse echo technique. In terms of dC/dP the results are: C11, 9.29; C33, 7.26; C66, 2.59; C44, 2.38; C12, 4.10; C13, 5.66; and C11 + C12 + 2C33 - 4C13, 5.27. These values are comparable with those previously found for polyvalent aluminum and magnesium. An attempt was made to fit to cadmium the theory of Reitz and Smith (Phys. Rev. 104:1253, 1956) for the elastic constants of magnesium. A fit could not be made, presumably because of the high overlap electron populations which arise from the anomalously high (c/a) ratio of cadmium. Consequently the pressure data could not be interpreted in terms of this model as was the same data for magnesium. (Author)

Descriptors :   (*CADMIUM), (*PRESSURE), (*ELASTICITY), (*SOLID STATE PHYSICS), (*SINGLE CRYSTALS), (*ULTRASONICS)

Distribution Statement : APPROVED FOR PUBLIC RELEASE