Articles
  • A hot spot in a GdBa2Cu3O7−δ ceramic rod with a core of Gd2BaCuO5 fabricated by dip coating 
  • Shingo Fujihara, Yuichiro Kuroki, Tomoichiro Okamoto and Masasuke Takata*
  • Department of Electrical Engineering, Nagaoka University of Technology, 1603-1 Kamitomioka, Nagaoka, Niigata 940-2188, Japan
Abstract
A GdBa2Cu3O7-delta ceramic rod with a core of Cd2BaCuO5 was prepared by dip coating. A hot spot appeared in the rod when a voltage exceeding a certain value was applied at room temperature. Moreover, the hot spot was broken into two when the voltage was increased further. A mechanism for the appearance of the double hot spots is discussed from the viewpoint of the change of resistance in the hot spot.

Keywords: dip coating; complex oxide; oxygen sensor; hot spot

This Article

  • 2010; 11(3): 401-404

    Published on Jun 30, 2010