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Equilibrium tie-line in PrOy–BaO–CuO ternary phase diagram around peritectic temperature of Pr1+xBa2−xCu3O7−δ

Published online by Cambridge University Press:  31 January 2011

Minoru Tagami ,
Makoto Kambara ,
Takateru Umeda  and
Yuh Shiohara
Minoru Tagami
Affiliation:
SRL-ISTEC, 1-10-13 Shinonome, Koto-ku, Tokyo 135, Japan
Makoto Kambara
Affiliation:
Department of Metallurgy, Faculty of Engineering, University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113, Japan
Takateru Umeda
Affiliation:
Department of Metallurgy, Faculty of Engineering, University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113, Japan
Yuh Shiohara
Affiliation:
SRL-ISTEC, 1-10-13 Shinonome, Koto-ku, Tokyo 135, Japan
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This paper presents tie-lines between Pr1+xBa2−xCu3O7−δ and liquid on a PrOy –BaO–CuO ternary phase diagram at 965, 970, 975, 980, and 990 °C in air atmosphere, for which knowledge is necessary to fabricate composition controlled Pr1+xBa2−xCu3O7−δ single crystals by the solution growth method. Liquidus faces have been investigated by dipping MgO single crystal rods into the thermal equilibrium melt at various temperatures and analyzing the composition of the adhering melt by ICP. The compositions of Pr1+xBa2−xCu3O7−δ solid solution coexisting with various compositions of liquids were obtained by quantitative EPMA analysis of quenched melts. Tie-lines were calculated by applying the lever rule to these experimental data for solid compositions and liquidus faces. Furthermore, the relationships between solid solubilities and peritectic temperatures of Pr1+xBa2−xCu3O7−δ are reported.

Type
Articles
Information
Journal of Materials Research , Volume 13 , Issue 1 , January 1998 , pp. 118 - 125
Copyright
Copyright © Materials Research Society 1998

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