Influence of Ar background gas pressure on composition and crystal orientation in PLD-Fe(Se1-xTex) thin films

Takatoshi Yoshimoto, Kenta Yuki, Ryo Teranishi, Shinji Munetoh, Kenji Kaneko

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    1 Citation (Scopus)

    Abstract

    Fe(Se1-xTex) thin films on (1 0 0) SrTiO3 were fabricated by a pulsed laser deposition method, and their crystal orientation, compositional shifts and superconducting properties were characterized by X-ray diffraction, scanning electron microscope combined with energy dispersive X-ray spectroscopy, etc. Compositional shift is one of the major problems during the fabrication of Fe(Se1-xTe x) films due to its containing high volatile elements such as Se and Te. The compositional shifts were found dependent on the Ar background gas pressure (PAr), which was suppressed by the increase of P Ar. In addition, it was revealed that the temperature window for the crystallization of the films was shifted to higher temperature region and wider temperature range with the increase of PAr.

    Original languageEnglish
    Pages (from-to)1616-1620
    Number of pages5
    JournalPhysica C: Superconductivity and its Applications
    Volume471
    Issue number23-24
    DOIs
    Publication statusPublished - Dec 1 2011

    All Science Journal Classification (ASJC) codes

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

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