We have investigated the stability of BaSnO 3 , BaZrO 3 , BaTiO 3 and BaNb 2 O 6 in the ErBa 2 Cu 3 O y (Er123) matrix by mixing and sintering powders of Er123 and barium oxides. The degradation of T c due to the addition of barium oxide was the lowest in the case of BaSnO 3 (BSO). BSO-added samples exhibited a T c above 90 K even for 15 vol% addition and an improved J c under a magnetic field. XRD and SEM results indicated that BSO was very stable in the Er123 matrix. The dependence of T c on BSO addition showed similar trends for the sintered samples and Er123 thin films. It was found that the most stable barium oxide in Er123 superconductors was BaSnO 3 .
All Science Journal Classification (ASJC) codes
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics
- Energy Engineering and Power Technology
- Electrical and Electronic Engineering