| Numéro |
J. Phys. Colloques
Volume 46, Numéro C10, Décembre 1985
Eighth International Conference on Internal Friction and Ultrasonic Attenuation in Solids
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|---|---|---|
| Page(s) | C10-609 - C10-612 | |
| DOI | https://doi.org/10.1051/jphyscol:198510133 | |
Eighth International Conference on Internal Friction and Ultrasonic Attenuation in Solids
J. Phys. Colloques 46 (1985) C10-609-C10-612
DOI: 10.1051/jphyscol:198510133
1 Institute of Solid State Physics, Department of Physics, Nanjing University, Nanjing, China
2 Institute of Crystal Material, Shandong University, China
J. Phys. Colloques 46 (1985) C10-609-C10-612
DOI: 10.1051/jphyscol:198510133
INTERNAL FRICTION ASSOCIATED WITH DOMAIN WALLS AND FERROELASTIC PHASE TRANSITION IN LNPP
SUN WENYUAN1, SHEN HUIMIN1, WANG YENING1 and LU BAOSHENG21 Institute of Solid State Physics, Department of Physics, Nanjing University, Nanjing, China
2 Institute of Crystal Material, Shandong University, China
Abstract
Two internal friction peaks (50 - 100kHz) have been measured in LNPP near its transition temperature. The peak at TC=141°C is associated with the ferroelastic transition where the elastic constant C55 vanishes and the peak at a lower temperature is attributed to the motion of domain walls. The variation of domain walls and its relation to Q-1 were obtained by in situ measurements. The mechanisms of the peaks are discussed.