As grown Bi2Sr2CaCu2Oy films by an off axis RF magnetron

J. H. Lu, Hong-Chang Yang, Herng-Er Horng

    Research output: Contribution to journalArticle

    Abstract

    Bi2Sr2Cu2Oy (BSCCO) films were in intu grown by an off axis rf magnetron sputtering. The sputtering targets were stoichiometric Bi2Sr2CaCu2O8 compounds. The sputtering gas was a maximum of O2 and Ar and the sputtering pressure varied from 50 - 100 mTorr. The films were grown at 570 - 600 °C. After growth the films were quickly cooled down to 300 K in 30 minutes. One found that the distance from the substrate to the target d is an important factor in affecting the deposition rate of the as grown BSCCO films. By reducing the distance d to 3 cm, we have achieved a deposition rate of about 1500 Å per hour in a sputtering power of 60 watts and sputtering pressure of 70 mtorr. With optinum growth conditions where the sustrate temperature was kept at 580 - 600 °C and the pressure was kept at 70 - 80 mTorr, superconducting BSCCO films with zero resistan at 75 - 85 K can be reproduced.

    Original languageEnglish
    Pages (from-to)2335-2336
    Number of pages2
    JournalPhysica B: Physics of Condensed Matter
    Volume194-196
    Issue numberPART 2
    DOIs
    Publication statusPublished - 1994 Feb 2

    ASJC Scopus subject areas

    • Electronic, Optical and Magnetic Materials
    • Condensed Matter Physics
    • Electrical and Electronic Engineering

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