SYNTHESIS AND THERMODYNAMIC PROPERTIES OF 124 PHASES IN THE Y,GD-BA-CU-O SYSTEM

Authors
MATSKEVICH NI POPOVA TL NAUMOV NG JOHANSSON LG BERASTEGUI P
Citation
Ni. Matskevich et al., SYNTHESIS AND THERMODYNAMIC PROPERTIES OF 124 PHASES IN THE Y,GD-BA-CU-O SYSTEM, Inorganic materials, 34(8), 1998, pp. 829-831
Citations number
14
Categorie Soggetti
Material Science
Journal title
Inorganic materials → ACNP
ISSN journal
00201685
Volume
34
Issue
8
Year of publication
1998
Pages
829 - 831
Database
ISI
SICI code
0020-1685(1998)34:8<829:SATPO1>2.0.ZU;2-R
Abstract
Dissolution calorimetry (6 N HCl, 323 K) was used to determine the ent halpy of some reactions involving TBa2Cu4O8 and Y0.5Gd0.5Ba2Cu4O8. Rea ction with CO2 is found to result in the decomposition of the 124 comp ounds studied into mixtures containing Y2O3, Gd2O3, CuO, and BaCO3. Bo th 124 phases are thermodynamically stable with respect to mixtures of Y2O3, Gd2O3, CuO, and BaCuO2 at room and lower temperatures.