HYPERSONIC ATTENUATION IN THIN SILVER FILMS AT 9-GC/S

被引：5

作者：

SPLITT, G

机构：

来源：

ZEITSCHRIFT FUR PHYSIK | 1969年 / 225卷 / 01期

关键词：

D O I：

10.1007/BF01392555

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The attenuation of longitudinal hypersonic waves (8.4-10.0 GHz) in thin polycrystalline silver films has been measured in the temperature range from 4 to 26 ‡K. The silver films with thicknesses between 0.2 and 3.0 Μ. were evaporated on the optically flat polished end surface of a cylindrical quartz transducer. The measured value of the attenuation coefficient α=1.5·104 dB cm-1 is much higher than the theoretically predicted value due to electron-phonon interaction. Furthermore the measured value α is independent of temperature and increases with the square of frequency. Presumably this attenuation of hypersonic waves in polycrystalline silver films is due to scattering processes at lattice defects. © 1969 Springer-Verlag.

引用

页码：60 / &

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