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The in-situ preparation of Bi2Sr2CaCu2O8 + δ films using the pulsed-laser deposition technique

✍ Scribed by F.S. Razavi; H.-U. Habermeier; P. Majewski

Publisher
Elsevier Science
Year
1992
Tongue
English
Weight
400 KB
Volume
13
Category
Article
ISSN
0921-5107

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✦ Synopsis

Bi-Sr-Ca-Cu-O thin films were deposited on (100)-oriented MgO single crystals using the pulsed-laser deposition technique and targets of nominal composition Bi2Sr2CaCu2Os+ 6 (i.e. ([Bi]:[Sr]:[Ca]:[Cu] =)2:2:1:2) with the mass density larger than 90% of the theoretical value. To obtain an in-situ process of producing single-phase 2 : 2 : 1: 2 films, we varied three parameters, namely the substrate temperature, the oxygen pressure and the distance between the target and substrate. The results of surface studies using scanning electron microscopy, energy-dispersive X-ray analysis, the superconducting transition temperature and the critical current density are discussed.

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