Title :
Ba/sub 1-x/K/sub x/BiO/sub 3/ thin films and grain boundary junctions prepared on MgO substrates
Author :
Imaeda, S. ; Inoue, M. ; Fujimaki, A. ; Hayakawa, H.
Author_Institution :
Dept. of Quantum Eng., Nagoya Univ., Japan
fDate :
6/1/1997 12:00:00 AM
Abstract :
We have made grain boundary junctions of Ba/sub 1-x/K/sub x/BiO/sub 3/ thin film deposited on MgO bicrystal substrate. A high initial deposition temperature yielded superconductive Ba/sub 1-x/K/sub x/BiO/sub 3/ films from powder targets. We observed clear energy gap structure in the current-voltage characteristics of these junctions. In the high frequency radiation (10.5 GHz), Photon Assisted Tunneling was observed.
Keywords :
Josephson effect; barium compounds; grain boundaries; high-temperature superconductors; potassium compounds; sputter deposition; superconducting energy gap; superconducting thin films; superconductive tunnelling; (BaK)BiO/sub 3/; 10.5 GHz; MgO; MgO bicrystal substrate; current-voltage characteristics; energy gap; grain boundary Josephson junction; high frequency radiation; photon assisted tunneling; sputter deposition; superconductive Ba/sub 1-x/K/sub x/BiO/sub 3/ thin film; Current-voltage characteristics; Frequency; Grain boundaries; Powders; Sputtering; Substrates; Superconducting films; Superconducting thin films; Superconductivity; Temperature;
Journal_Title :
Applied Superconductivity, IEEE Transactions on
