High-Tcsingle-crystal growth in the Bi-Sr-Ca-Cu-O system by inductive melting in a cold crucible
| Autor: | A. V. Zvarykina, L. I. Buravov, V N Topnickov, S V Lysikov, A G Homenko, V N Laukhin, A N Steinberg, V A Raduchev, V V Denisevich |
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| Rok vydání: | 1992 |
| Předmět: |
chemistry.chemical_classification
Superconductivity Materials science High-temperature superconductivity Annealing (metallurgy) Transition temperature Metals and Alloys Analytical chemistry Crystal growth Condensed Matter Physics law.invention chemistry law Materials Chemistry Ceramics and Composites Electrical and Electronic Engineering Crystallization Inorganic compound Single crystal |
| Zdroj: | Superconductor Science and Technology. 5:327-330 |
| ISSN: | 1361-6668 0953-2048 |
| Popis: | Oriented crystallization of the Bi2Sr2CaCu2O8-x compound melt has been performed by inductive melting in a cold crucible. The influence of the melt crystallization regime on the size and properties of single crystals is shown. The regime for single-crystal annealing was selected so as to raise the transition temperature. The influence of surface polishing of crystals obtained at different crystallization rates upon high-temperature transition width is shown. A regime for fabrication of single crystals of size 3*1*0.05 mm3 is found. The superconducting fraction (V/V0=100%) of the crystals is characterized by the transition temperature measured along the middle of the resistance curve Tc=81-84 K at temperature dependences R(T)/R(293) converging toward zero at T=80 K. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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