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

Volume

7

Issue

2

fYear

1997

fDate

6/1/1997 12:00:00 AM

Firstpage

1447

Lastpage

1450

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;

fLanguage

English

Journal_Title

Applied Superconductivity, IEEE Transactions on

Publisher

ieee

ISSN

1051-8223

Type

jour

DOI

10.1109/77.620844

Filename

620844