C-axis-correlated vortex pinning center induced by dilute Co-doping in pulsed-laser-deposition-ErBa2Cu3Oy films

Shigeru Horii, Yusuke Ichino, Toshinori Ozaki, Kaname Matsumoto, Yutaka Yoshida, Masashi Mukaida, Ataru Ichinose, Jun Ichi Shimoyama, Kohji Kishio

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    5 Citations (Scopus)

    Abstract

    Critical current properties were carefully clarified for Co-doped ErBa 2Cu3Oy (Er123) films grown by pulse laser deposition. Co-doped Er123 films with various Co doping levels have been successfully fabricated by controlling substrate temperature (Ts). Critical temperatures (Tc) were decreased with a decrease in T s, which means that the Co-doping levels into the CuO2 plane can be controlled by Ts. It was found from J c-θ plots for relatively heavily Co-doped films that c-axis-correlated vortex pinning centers were introduced by the Co-doping. The inhomogeneous distribution of Co ions in films probably plays a key role in the improvement of the new type of pinning center.

    Original languageEnglish
    Pages (from-to)L617-L620
    JournalJapanese Journal of Applied Physics, Part 2: Letters
    Volume45
    Issue number24-28
    DOIs
    Publication statusPublished - Jun 16 2006

    All Science Journal Classification (ASJC) codes

    • Engineering(all)
    • Physics and Astronomy (miscellaneous)
    • Physics and Astronomy(all)

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