The mechanism and dynamic model of the formation of 2223 phase are presented and verified in the paper. It reveals that with the solubilization of part of the 2212 phase, 2223 phase is formed by the reaction being carried out according to a nucleation and growth mechanism in the presence of liquid p
Effect of cooling rate of Bi2Sr2Ca1Cu2Ox melt on the superconducting properties of the resultant polycrystalline ceramics
β Scribed by Won-Hyuk Lee; Hideo Hosono; Kouichi Nakamura; Yoshihiro Abe
- Publisher
- Elsevier Science
- Year
- 1991
- Tongue
- English
- Weight
- 299 KB
- Volume
- 185-189
- Category
- Article
- ISSN
- 0921-4534
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Fabrication and characterization of Bi2SI"2CatCU2Ox superconducting thin films, dc-magnetron sputtered from a stoichiometric oxide target on MgO and CaNdAI04 single crystals is reported. Despite a very short annealing time (5 minutes at 900 β’C in air), the films are highly textured with a dominant 8
Epitaxial films of the Bi,Sr,Ca,Cu,O, phase were prepared on MgO( 100) substrates in situ by RF magnetron sputtering. The as-grown film showed a T, onset of 92 K and a T, end of 82 K. The superconducting properties and the c-axis lattice constant could be varied reversibly by annealing the film in v