On the crystallization of terbium aluminium garnet

Authors
Ganschow, S Klimm, D Reiche, P Uecker, R
Citation
S. Ganschow et al., On the crystallization of terbium aluminium garnet, CRYST RES T, 34(5-6), 1999, pp. 615-619
Citations number
6
Categorie Soggetti
Physical Chemistry/Chemical Physics
Journal title
CRYSTAL RESEARCH AND TECHNOLOGY
ISSN journal
02321300 → ACNP
Volume
34
Issue
5-6
Year of publication
1999
Pages
615 - 619
Database
ISI
SICI code
0232-1300(1999)34:5-6<615:OTCOTA>2.0.ZU;2-O
Abstract
Attempts to grow terbium aluminium garnet (Tb3Al5O12, TAG) by the CZOCHRALS KI method lead to crystals of millimeter scale. Larger crystals could not b e obtained. DTA measurements within the binary system showed that TAG melts incongruently at 1840 degrees C. The perovskite (TbAlO3, TAP) with a congr uent melting point of 1930 degrees C is the most stable phase in this syste m. The region for primary crystallization of TAP covers the chemical compos ition of TAG and suppresses the primary crystallization of the terbium alum inium garnet.