Preparation and properties of superconducting glass-ceramics in the Bi-Sr-Ca-Cu-O system
- Kurnakov Institute of General and Inorganic Chemistry, Moscow (Russian Federation); and others
The discovery of high-temperature superconductivity by Bednorz and Mueller and subsequent efforts to produce new high-T{sub c} materials have led to extensive studies of various (not only oxidic) systems with the aim of enhancing the superconducting transition temperature (T{sub c}) and stabilizing the superconducting phases. As a result, superconducting phases were found in the Bi-Sr-Ca-Cu-O and Tl-Ba-Ca-Cu-O systems. Because of the high toxicity of thallium and specific procedures required for preparing thallium-based high-T{sub c} materials, the majority of studies have focused on the bismuth system. In our previous works, we demonstrated the possibility of producing high-T{sub c} materials in the Bi-Sr-Ca-Cu-O system via a new process involving the crystallization of a glass phase, which may occasionally contain additions of lead, antimony, cadmium, and transition-metal oxides to improve the properties of the resultant high-T{sub c} materials. In this paper, we report our findings on glass formation in the Bi-Sr-Ca-Cu-O system and on crystallization conditions necessary for obtaining superconducting phases.
- OSTI ID:
- 103455
- Journal Information:
- Inorganic Materials, Journal Name: Inorganic Materials Journal Issue: 10 Vol. 30; ISSN INOMAF; ISSN 0020-1685
- Country of Publication:
- United States
- Language:
- English
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