Numéro
J. Phys. Colloques
Volume 42, Numéro C5, Octobre 1981
ICIFUAS-7
Seventh International Conference on Internal Friction and Ultrasonic Attenuation in Solids
Page(s) C5-989 - C5-994
DOI https://doi.org/10.1051/jphyscol:19815152
ICIFUAS-7
Seventh International Conference on Internal Friction and Ultrasonic Attenuation in Solids

J. Phys. Colloques 42 (1981) C5-989-C5-994

DOI: 10.1051/jphyscol:19815152

DISPERSION ANOMALY OF ULTRASONIC WAVE IN Cu-Zn CRYSTALS AND V3Si CRYSTALS

K. Kojima1, K. Shimomura1 et Y.K. Chang2

1  Department of Physics, Yokohama City University, 22-2 Seto, Kanazawa-ku, Yokohama 236, Japan
2  Solid State Division, Oak Ridge National Lab., Oak Ridge, Tennessee 37830, U.S.A.


Abstract
In quenched β' -Cu-Zn alloy which undergoes the first order martensitic transformation, although the small anomalous dispersion was observed in the frequency of MHz, the magnitude of dispersion did not depend on the temperature. It was suggested that the well known anomalous behavior of elastic constant in this alloy could not explain in terms of the deviation of phase velocity. On the other hand, in case of V3Si crystal which undergoes the second order martensitic transformation at lower temperature, the anomalous dispersion of ultrasonic wave strongly depended on temperature. These results are reported in this paper.