Title :
Improvement in switching characteristics of HTS power electric device prepared by pulsed laser deposition
Author :
Yamagata, Y. ; Shingai, K. ; Ikegami, T. ; Ebihara, K. ; Inoue, N.
Author_Institution :
Dept. of Electr. Eng. & Comput. Eng., Kumamoto Univ., Japan
fDate :
6/1/1997 12:00:00 AM
Abstract :
High quality YBCO film was prepared on the YSZ buffered Hastelloy substrate by PLD method with an effective in-situ anneal. The T/sub c/(zero) and the J/sub c/ of the YBCO film on YSZ/Hastelloy is 83.4 K and 6.6/spl times/10/sup 3/ A/cm/sup 2/ (at 77 K), respectively. The phase transition between the superconducting state and the normal conducting state of the film showed higher response due to the high thermal conductivity and the small thermal capacity than that of the YBCO film deposited on MgO substrate.
Keywords :
barium compounds; high-temperature superconductors; pulsed laser deposition; superconducting devices; superconducting switches; superconducting thin films; superconducting transition temperature; thermal conductivity; yttrium compounds; 83.4 K; HTS power electric device; YBCO film; YBa/sub 2/Cu/sub 3/O/sub 7/; YSZ buffered Hastelloy substrate; effective in-situ anneal; high temperature superconductor; high thermal conductivity; normal conducting state; phase transition; pulsed laser deposition; small thermal capacity; superconducting state; switching characteristics; Buffer layers; High temperature superconductors; Optical pulses; Power lasers; Pulsed laser deposition; Substrates; Superconducting films; Superconducting thin films; Thermal conductivity; Yttrium barium copper oxide;
Journal_Title :
Applied Superconductivity, IEEE Transactions on
