Phase equilibria of the Ba-Sm-Y-Cu-O system for coated conductor applications

Journal Article · Wed Dec 15 00:00:00 EST 2010 · Journal of Solid State Chemistry

DOI:https://doi.org/10.1016/j.jssc.2010.09.001· OSTI ID:21494142

Liu, G ^[1]; Wong-Ng, W ^[1]; Yang, Z ^[1]; Kaduk, J A ^[2]; Cook, L P ^[1]

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1. Ceramics Division, Materials Science and Engineering Laboratory, National Institute of Standards and Technology, Gaithersburg, MD 20899 (United States)
2. Poly Crystallography Inc., Naperville, IL 60540 (United States)

The complex phase relationships near the BaO-poor region of the quaternary Ba-Sm-Y-Cu-O oxide system prepared in pure air (p{sub O{sub 2}}=22 kPa, 950 {sup o}C) and in 0.1% O{sub 2} (p{sub O{sub 2}}=100 Pa, 810 {sup o}C) have been determined. This investigation also included the subsolidus compatibilities in ten subsystems (Ba-Sm-Y-O, Ba-Sm-Cu-O, Ba-Y-Cu-O, Sm-Y-Cu-O, Ba-Sm-O, Ba-Y-O, Ba-Cu-O, Sm-Y-O, Sm-Cu-O, and Y-Cu-O), and the homogeneity range of five solid solutions (Ba(Sm{sub x}Y{sub 2-x})CuO{sub 5}, (Sm,Y){sub 2}O{sub 3}, (Sm,Y){sub 2}CuO{sub 4}, (Y,Sm){sub 2}Cu{sub 2}O{sub 5}, and Ba(Sm,Y){sub 2}O{sub 4}). The single phase range of the superconductor solid solution, (Ba{sub 2-x}Sm{sub x})(Sm{sub 1-y}Y{sub y})Cu{sub 3}O{sub 6+z}, and the phase compatibilities in its vicinity, which are particularly important for processing, are described in detail. The phase equilibrium data of the Ba-Sm-Y-Cu-O system will enable the improvement of the intrinsic superconducting properties of second-generation wires, and facilitate the flux-pinning process. -- Graphical Abstract: Phase diagram overview of the Ba-Sm-Y-Cu-O system in the BaO-poor region prepared in p{sub O2}=22 kPa, 950 {sup o}C. Display Omitted

• OSTI ID: 21494142
• Journal Information: Journal of Solid State Chemistry, Vol. 183, Issue 12; Other Information: DOI: 10.1016/j.jssc.2010.09.001; PII: S0022-4596(10)00384-1; Copyright (c) 2010 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.; ISSN 0022-4596
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
BARIUM COMPOUNDS
CUPRATES
HIGH-TC SUPERCONDUCTORS
MAGNETIC FLUX
PHASE DIAGRAMS
PRESSURE RANGE KILO PA
PRESSURE RANGE PA
SAMARIUM COMPOUNDS
SOLID SOLUTIONS
TEMPERATURE RANGE 1000-4000 K
YTTRIUM COMPOUNDS
ALKALINE EARTH METAL COMPOUNDS
COPPER COMPOUNDS
DIAGRAMS
DISPERSIONS
HOMOGENEOUS MIXTURES
INFORMATION
MIXTURES
OXYGEN COMPOUNDS
PRESSURE RANGE
RARE EARTH COMPOUNDS
SOLUTIONS
SUPERCONDUCTORS
TEMPERATURE RANGE
TRANSITION ELEMENT COMPOUNDS
TYPE-II SUPERCONDUCTORS