Elastic and piezoelectric properties of carbazole-trinitrobenzene crystals as studied by thermally induced electrical oscillations
✍ Scribed by A. Miniewicz; M. Samoć; J. Sworakowski; B. Jakubowski; Z. Zboiński; A. Cehak
- Publisher
- Elsevier Science
- Year
- 1980
- Tongue
- English
- Weight
- 314 KB
- Volume
- 76
- Category
- Article
- ISSN
- 0009-2614
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✦ Synopsis
roclnm. TO-370 ~'roclnn Poland Recelbed 33 August 19SO Thermall) Induced elrctrlcal osallatlons were employed to stud> elasuc and plezoelectrx proprrrles of carbazoletrmltrobenzene charge-transfer cqstals The temperature dependence of the effectl\e elastic coefficients and relatl\e plezoelectrlc moduh allowed us to detect a phase fransmon ar 295 K Temperature dependence of tmo of rhree non-zero plezoelectrlc modull suggests another phase transItton al -95 K When a crystal IS exposed to a sudden local increase of temperature. the strain generated acts as a source of acoustic waves The local temperature rise may be produced, e g. by lllummatmg the sample with a pulse of strongly absorbed hght (either N-I the surface region of the sample or m an electrode