Enhancement of critical temperature of LaBa2Cu3Oy thin films by novel film growth technique

Y. Ichino, Y. Yoshida, K. Inoue, S. Funaki, Y. Takai, K. Matsumoto, Masashi Mukaida, A. Ichinose, S. Horii

    Research output: Contribution to journalArticlepeer-review

    Abstract

    Although it is well known that LaBa2Cu3Oy (La123) superconductor has a possibility for the highest Tc among REBa2Cu3Oy (RE123) materials, it is hard to obtain a high Tc since solid solutions with low-Tc are easily formed. In this work, we prepared La123 thin films by conventional pulsed laser deposition (PLD) method and novel low temperature growth (LTG) technique and we compared Tc of the La123 thin films. As a result, La123 thin films grown at a relative low temperature by using LTG technique showed higher Tc than those of films grown by PLD method. From an evaluation of orthorhombicity by using in-plane X-ray diffraction system, the orthorhombicity became larger with decreasing the substrate temperature and Tc of LTG-La123 thin films also increased up to 83 K. Those facts indicate that the formation of low-Tc solid solutions is suppressed by low temperature growth.

    Original languageEnglish
    Pages (from-to)1623-1626
    Number of pages4
    JournalPhysica C: Superconductivity and its applications
    Volume468
    Issue number15-20
    DOIs
    Publication statusPublished - Sep 15 2008

    All Science Journal Classification (ASJC) codes

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

    Fingerprint

    Dive into the research topics of 'Enhancement of critical temperature of LaBa<sub>2</sub>Cu<sub>3</sub>O<sub>y</sub> thin films by novel film growth technique'. Together they form a unique fingerprint.

    Cite this