QUATERNARY SYSTEM SRO-CAO-BAO-CUO AT 950-DEGREES-C .2. PHASE-EQUILIBRIA RELATED TO THE SUBSTITUTION SR BA IN (SR/BA)(2)CA2CU2CU3O7 AND (SR/BA)(2)CACU2O5 SAMPLES/

Authors
LEBBOU K ABRAHAM R TROSSET S COHENADAD MT
Citation
K. Lebbou et al., QUATERNARY SYSTEM SRO-CAO-BAO-CUO AT 950-DEGREES-C .2. PHASE-EQUILIBRIA RELATED TO THE SUBSTITUTION SR BA IN (SR/BA)(2)CA2CU2CU3O7 AND (SR/BA)(2)CACU2O5 SAMPLES/, Materials research bulletin, 32(8), 1997, pp. 1027-1036
Citations number
6
Categorie Soggetti
Material Science
Journal title
Materials research bulletin → ACNP
ISSN journal
00255408
Volume
32
Issue
8
Year of publication
1997
Pages
1027 - 1036
Database
ISI
SICI code
0025-5408(1997)32:8<1027:QSSA9.>2.0.ZU;2-1
Abstract
A partial study of the solid-solid equilibria in the quaternary system BaO-SrO-CaO-CuO has been undertaken in order to determine the observe d phases and their evolution when Ba is substituted for Sr in mixtures (Sr/Ba)(2)CaCu2Ox and (Sr/Ba)(2)Ca2Cu3Ox. The temperature was fixed a t 950 degrees C and samples were elaborated under 1 bar of flowing oxy gen. It has been shown that two four-phased domains exist in this quan ternary system, including the following phases: (Ba/Sr/Ca)CuO2, (Sr/Ca /Ba)(2)CuO3, (Sr/Ca/Ba)(14)Cu24Ox, and Ba4CaCu3O8 substituted Sr/Ca fo r the one and (Ba/Sr/Ca)CuO2, (Sr/Ca/Ba)(2)CuO3, (Sr/Ca/Ba)(14)Cu24Ox and (Sr/Ca/Ba)CuO2 for the other. (C) 1997 Elsevier Science Ltd.