ELASTIC-CONSTANTS AND MICROCRACKS IN YBA2CU3O7

Authors
SHINDO Y LEDBETTER H NOZAKI H
Citation
Y. Shindo et al., ELASTIC-CONSTANTS AND MICROCRACKS IN YBA2CU3O7, Journal of materials research, 10(1), 1995, pp. 7-10
Citations number
14
Categorie Soggetti
Material Science
Journal title
Journal of materials research → ACNP
ISSN journal
08842914
Volume
10
Issue
1
Year of publication
1995
Pages
7 - 10
Database
ISI
SICI code
0884-2914(1995)10:1<7:EAMIY>2.0.ZU;2-9
Abstract
We analyze theoretically the effect of microcracks and voids on the ap parent elastic constants of polycrystalline YBa2Cu3O7. Using measureme nts by Holcomb and Mayo, we calculate crack density and crack aspect r atio. We obtain reasonable intrinsic elastic constants. For the bulk m odulus, for example, we predict values close to these obtained by neut ron-diffraction studies: 123 GPa for a polycrystal and 122 GPa for a m onocrystal.