Crystal growth and properties of the RBa sub 2 Cu sub 3 O sub 7 minus y family
- M. V. Lomonosov Moscow State University, Moscow (SU)
The RBa{sub 2}Cu{sub 2}O{sub 7{minus}y} single crystals (R=Y, Pr, Nd, Sm, Eu, Gd, Dy, Ho, Er, Tm, and Yb) with dimensions from 1--2 mm to 7--8 mm were grown from nonstoichiometric melts of R{sub 2}O{sub 3}-BaO-CuO systems. The growth mechanism seems to be a dislocation mechahism in which the substance is transported along a thin cuprate melt film which west the faces of the growing crystal. The domain structure depends on the growth conditions. In some cases nearly single-domain crystals of YBa{sub 2}Cu{sub 3}O{sub 7{minus}x} and TmBa{sub 2}Cu{sub 3}O{sub 7{minus}y} several millimeters in size can be obtained. Magnetic measurements were used to detect superconducting transitions. After annealing in oxygen the critical temperature increased to temperatures in the range 62--89 K for various metals.
- OSTI ID:
- 6862078
- Journal Information:
- Superconductivity; (USA), Vol. 2:2
- Country of Publication:
- United States
- Language:
- English
Similar Records
Preparation and characterization of single-crystal RBa/sub 2/Cu/sub 3/O(7-delta) (R = Er, Ho). Technical report No. 31, 1 July 1987-15 July 1988
Growth and superconducting properties of TmBa{sub 2}Cu{sub 3}O{sub 7-x} Crystals
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BARIUM OXIDES
CRYSTAL GROWTH
SUPERCONDUCTIVITY
COPPER OXIDES
RARE EARTH COMPOUNDS
CRYSTAL STRUCTURE
DOMAIN STRUCTURE
MONOCRYSTALS
TRANSITION TEMPERATURE
ALKALINE EARTH METAL COMPOUNDS
BARIUM COMPOUNDS
CHALCOGENIDES
COPPER COMPOUNDS
CRYSTALS
ELECTRIC CONDUCTIVITY
ELECTRICAL PROPERTIES
OXIDES
OXYGEN COMPOUNDS
PHYSICAL PROPERTIES
THERMODYNAMIC PROPERTIES
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360204 - Ceramics
Cermets
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