X-ray topography of piezoelectric La(3)Ta(14)Ga(5.5)O(14) crystal grown by Czochralski Method.
IEEE Trans Ultrason Ferroelectr Freq Control
; 55(5): 971-4, 2008 May.
Article
en En
| MEDLINE
| ID: mdl-18519197
ABSTRACT
We performed synchrotron X-ray topography on a La(3)Ta0(0.5)Ga (5.5)O(14) (LTG) crystal grown by the Czochralski method. Since a synchrotron X-ray source can provide high-energy X-rays, one can detect bulk structures by X-ray topography. LTG is one of the most attractive piezoelectric crystals along with La(3)Ga(5)SiO(14) (LGS) because of its excellent acoustic properties (temperature compensation of acoustic losses). Since LTG single crystals can be grown from a stoichiometric melt, it was expected that single crystals with better quality than the LGS crystal, which cannot be grown from a stoichiometric system but only from a congruent melt, can be obtained. However, 60 keV X-ray topography revealed that the LTG crystal quality was not as high as the LGS crystal quality. The crystal quality of the central region was lower than that of the surrounding region.
Texto completo:
1
Colección:
01-internacional
Banco de datos:
MEDLINE
Asunto principal:
Difracción de Rayos X
/
Cerámica
/
Cristalización
/
Fenómenos Electromagnéticos
Idioma:
En
Revista:
IEEE Trans Ultrason Ferroelectr Freq Control
Asunto de la revista:
MEDICINA NUCLEAR
Año:
2008
Tipo del documento:
Article
País de afiliación:
Japón