| Issue |
J. Phys. Colloques
Volume 42, Number C5, Octobre 1981
ICIFUAS-7Seventh International Conference on Internal Friction and Ultrasonic Attenuation in Solids |
|
|---|---|---|
| Page(s) | C5-1103 - C5-1108 | |
| DOI | https://doi.org/10.1051/jphyscol:19815171 | |
ICIFUAS-7
Seventh International Conference on Internal Friction and Ultrasonic Attenuation in Solids
J. Phys. Colloques 42 (1981) C5-1103-C5-1108
DOI: 10.1051/jphyscol:19815171
1 Materials Science Department, S.C.K./C.E.N., B-2400 Mol, Belgium
2 R.U.C. Antwerpen, B-2020 Antwerpen, Belgium
Seventh International Conference on Internal Friction and Ultrasonic Attenuation in Solids
J. Phys. Colloques 42 (1981) C5-1103-C5-1108
DOI: 10.1051/jphyscol:19815171
INTERNAL FRICTION AND MODULUS EFFECTS AT THE PHASE TRANSITIONS IN FERROELASTIC LEAD ORTHOVANADATE
R. De Batist1, 2 et L. Eersels11 Materials Science Department, S.C.K./C.E.N., B-2400 Mol, Belgium
2 R.U.C. Antwerpen, B-2020 Antwerpen, Belgium
Abstract
Results are reported of an internal friction investigation (at a frequency of about 1 kHz) of the ferroelastic α and β phases and the paraelastic γ phase of lead orthovanadate [Pb3(VO4)2]. Both the α-β and the β-γ phase transition result in a modulus anomaly and a macroscopic shape change of the specimen. A damping increase is observed at the α-β phase transformation and sometimes also at the β-γ phase transfornation. The β-γ transition is characterized by very pronounced, irreversible changes in the modulus. Several damping peaks occurring in the α and in the β phases are also reported.