A STUDY OF DISLOCATIONS GENERATED BY INCLUSIONS IN GADOLINIUM GALLIUMGARNET CRYSTALS BY BIREFRINGENCE TOPOGRAPHY

Authors
GE CZ HSU CC MING NB
Citation
Cz. Ge et al., A STUDY OF DISLOCATIONS GENERATED BY INCLUSIONS IN GADOLINIUM GALLIUMGARNET CRYSTALS BY BIREFRINGENCE TOPOGRAPHY, Journal of crystal growth, 142(1-2), 1994, pp. 133-139
Citations number
26
Categorie Soggetti
Crystallography
Journal title
Journal of crystal growth → ACNP
ISSN journal
00220248
Volume
142
Issue
1-2
Year of publication
1994
Pages
133 - 139
Database
ISI
SICI code
0022-0248(1994)142:1-2<133:ASODGB>2.0.ZU;2-7
Abstract
By means of birefringence topography, the stress fields around and the dislocations generated from iridium inclusions of various shapes in g adolinium gallium garnet (GGG) have been characterized. The Burgers ve ctors of dislocations have been identified as 1/2a[111], a[100] and a[ 110]. Some of the dislocations with a[110] Burgers vector are decompos ed into two perfect dislocations with 1/2a[111] Burgers vector. It has been demonstrated that the inclusions acted as effective sources to g enerate dislocations in GGG crystal during growth and cooling processe s.