Comparative study of hypersonic propagation in YBa2Cu3O7-delta single crystals and thin films

Authors
Kuzel, P Dugautier, C Moch, P
Citation
P. Kuzel et al., Comparative study of hypersonic propagation in YBa2Cu3O7-delta single crystals and thin films, J PHYS-COND, 13(1), 2001, pp. 167-175
Citations number
33
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science
Journal title
JOURNAL OF PHYSICS-CONDENSED MATTER
ISSN journal
09538984 → ACNP
Volume
13
Issue
1
Year of publication
2001
Pages
167 - 175
Database
ISI
SICI code
0953-8984(20010108)13:1<167:CSOHPI>2.0.ZU;2-I
Abstract
Elastic properties of YBa2Cu3O7-delta single crystals and thin epitaxial fi lms were measured at room temperature by means of Brillouin scattering. The elastic stiffnesses, which reflect a pseudo-tetragonal symmetry of the ela stic properties, were determined for both kinds of samples. For the single crystals, only small differences from the previously published data were fo und. For the thin films, a significant hardening of the shear stiffness C-5 5 (15%) was observed, in contrast with the softening usually obtained for m any compounds.