EVIDENCE OF AN ELASTIC INSTABILITY BETWEEN THE AMORPHOUS AND THE MICROCRYSTALLINE STATE OF CA-MODIFIED LEAD TITANATE AS REVEALED BY BRILLOUIN SPECTROSCOPY

Authors
KRUGER JK ZIEBERT C SCHMITT H JIMENEZ B BRUCH C
Citation
Jk. Kruger et al., EVIDENCE OF AN ELASTIC INSTABILITY BETWEEN THE AMORPHOUS AND THE MICROCRYSTALLINE STATE OF CA-MODIFIED LEAD TITANATE AS REVEALED BY BRILLOUIN SPECTROSCOPY, Physical review letters, 78(11), 1997, pp. 2240-2243
Citations number
20
Categorie Soggetti
Physics
Journal title
Physical review letters → ACNP
ISSN journal
00319007
Volume
78
Issue
11
Year of publication
1997
Pages
2240 - 2243
Database
ISI
SICI code
0031-9007(1997)78:11<2240:EOAEIB>2.0.ZU;2-J
Abstract
Brillouin spectroscopy was used to probe the hypersonic properties of Ca-modified lend titanate between the purl amorphous and the coarse gr ained state. The samples were thin films rf sputtered onto (100)-silic on wafer at ambient temperature, followed by an annealing process in t he range from 673 to 873 K. An elastic instability of the longitudinal ly polarized sound mode suggests the existence of a discontinuous stru ctural transformation from the amorphous to the nanostructure state.