| Numéro |
J. Phys. Colloques
Volume 42, Numéro C6, Décembre 1981
International Conference on Phonon Physics
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|
|---|---|---|
| Page(s) | C6-873 - C6-875 | |
| DOI | https://doi.org/10.1051/jphyscol:19816259 | |
International Conference on Phonon Physics
J. Phys. Colloques 42 (1981) C6-873-C6-875
DOI: 10.1051/jphyscol:19816259
1 Technological Univ. of Nagaoka, Nagaoka, Niigata, Japan
2 Musashino Electrical Comm. Lab., N.T.T., Musashino, Tokyo, Japan
J. Phys. Colloques 42 (1981) C6-873-C6-875
DOI: 10.1051/jphyscol:19816259
DIPOLAR FIELD FLUCTUATION EFFECTS ON PHONON ECHOES IN PIEZOELECTRIC POWDER
S. Yoshikawa1 et T. Kimura21 Technological Univ. of Nagaoka, Nagaoka, Niigata, Japan
2 Musashino Electrical Comm. Lab., N.T.T., Musashino, Tokyo, Japan
Abstract
One-shot phonon echo in piezoelectric powder was studied in order to simplify the experimental condition and clarify the basic mechanism on this phenomenon. One-shot phonon echo is observed by the application of the single sequence of the incident electric pulses. The one-shot two-pulse echo was observed to have relaxation characteristics with the function of exp(-α τ2). The dynamic relaxation is clarified to originate in the effect of the local field fluctuation in a large number of the oscillating piezoelectric particles.