학술논문
La-Sr-Nb-O film as a candidate for superconductor withTce up to 255 K
Document Type
Article
Author
Source
Journal of Low Temperature Physics; March 1988, Vol. 70 Issue: 5-6 p485-492, 8p
Subject
Language
ISSN
00222291; 15737357
Abstract
A possible high-Tcc superconductivity in a La-Sr-Nb-O film is reported. Onset of the resistive transition is at a temperature (Tco ) of 315 K, with a zero-resistance state at a temperature (Tce ) of 255 K. Diamagnetization of about 5% that of the pure Nb superconductor and a noticeable current dependence ofTco andTce are observed. The yield probability of this film is ~50%. The characteristics were observed even 17 days after preparation. However, a thermal cycle (cooling and warming) of more than ten cycles gradually deteriorates the characteristics.