Preparation of high-Tc superconducting film in the system of Bi-Sr-Ca-Cu-O from sol-gel process and its properties

• Published in: Journal of materials science 1992-08, Vol.27 (15), p.4085-4088
• Main Authors: OKANO, T, SEI, T, TSUCHIYA, T
• Format: Article
• Language: English
• Subjects: Condensed matter: structure, mechanical and thermal properties; Exact sciences and technology; Physics; Solid surfaces and solid-solid interfaces; Surface and interface dynamics and vibrations; Surfaces and interfaces; thin films and whiskers (structure and nonelectronic properties); Thin film structure and morphology
• ISSN: 0022-2461; 1573-4803
• DOI: 10.1007/BF01105109

High-Tc superconducting Bi2Sr2CaCu2Ox films with Tc(off) = 80 K were prepared by the dipping method of sol-gel processing using inorganic salts. The influence of the preparation conditions on the superconducting properties of the derived material is reviewed. Bi, Sr, Ca and Cu nitrates were used as raw materials. Glycerol was used as solvent. The thickness of films made by the dip method was about 0.5 micron. The films were crystallised by heat-treatment at 830 C for 10 min. Tc(off) of the films was 80 K and Jc at 77 K was more than 8 kA/cm2. Synthesis of high-Tc superconducting films was very easy and the crystallisation of films was possible with a relatively low heat-treatment temperature. 11 refs.