원문정보
초록
영어
We investigated the relation between the Cu-O bond length and the superconducting properties of BaSnO3 (BSO)-added GdBa2Cu3O7-x (GdBCO) thin films by using extended x-ray absorption fine structure (EXAFS) spectroscopy. 4 wt.% BaSnO3 (BSO) added GdBa2Cu3O7-x (GdBCO) thin films with varying thickness from 0.2 μm to 1.0 μm were fabricated by using pulsed laser deposition (PLD) method. The transition temperature (Tc) and the residual resistance ratio (RRR) of the GdBCO films increased with increasing thickness up to 0.8 μm, where the crystalline BSO has the highest peak intensity, and then decreased. This uncommon behaviors of Tc and RRR are likely to be created by the addition of BSO, which may change the ordering of GdBCO atomic bonds. Analysis from the Cu K-edge EXAFS spectroscopy showed an interesting thickness dependence of ordering behavior of BSO-added GdBCO films. It is noticeable that the ordering of Cu-O bond and the transition temperature are found to show opposite behaviors in the thickness dependence. Based on these results, the growth of BSO seemingly have evident effect on the alteration of the local structure of GdBCO film.
목차
1. INTRODUCTION
2. EXPERIMENT
3. RESULTS AND DISCUSSION
4. CONCLUSION
ACKNOWLEDGMENT
REFERENCES
저자정보
참고문헌
- 1Y. Xu, M. Izumi1, K. Tsuzuki, Y. Zhang, C. Xu, M. Murakami, N. Sakai and I. Hirabayashi, "Flux pinning properties in a GdBa2Cu3O7−δ bulk superconductor with the addition of magnetic alloy particles," Supercond. Sci. Technol. vol. 22, pp. 095009, 2009.
- 2High JC GdBa2Cu3O7-δ Coated Conductors on Ceo2-Buffered IBAD MgO Template Fabricated by Pulsed Laser Deposition네이버 원문 이동
- 3Addition of nanoparticle dispersions to enhance flux pinning of the YBa2Cu3O7-x superconductor네이버 원문 이동
- 4J. Hänisch, C. Cai, V. Stehr, R. Hühne, J. Lyubina, K. Nenkov, G. Fuchs, L. Schultz and B. Holzapfel, "Formation and pinning properties of growth-controlled nanoscale precipitates in YBa2Cu3O7−δ/transition metal quasi-multilayers," Supercond. Sci. Technol. vol. 19, pp. 534, 2006.
- 5N. Long, N. Strickland, B. Chapman, N. Ross, J. Xia, X. Li, W. Zhang, T. Kodenkandath, Y. Huang and M. Rupich, "Enhanced in-field critical currents of YBCO second-generation (2G) wire by Dy additions," Supercond. Sci. Technol. vol.18 pp. S405, 2005.
- 6Minute doping with deleterious rare earths in YBa2Cu3O7−δ films for flux pinning enhancements네이버 원문 이동
- 7Thickness dependence of critical current density in GdBa 2 Cu 3 O 7−δ thin films with BaSnO 3 addition네이버 원문 이동
- 8Stability of barium oxides in REBa 2Cu 3O y superconductors네이버 원문 이동
- 9Cu-O bond and Tc changes in 123, 124 & 247-superconductors네이버 원문 이동
- 10Relation between T c and Cu-O bond length within the basal plane of Ce 0.15Nd 1.85−xM xCuO 4−y (M=La and Sm) and Ce 0.15Pr 1.85CuO 4−y네이버 원문 이동
- 11Relationship between TC and Cu Valence and Bond Lengths of Cu-Cu and Cu-O for Ba2-xEu1+xCu3O7-y Compounds.네이버 원문 이동
- 12ATHENA, ARTEMIS, HEPHAESTUS: data analysis for X‐ray absorption spectroscopy using IFEFFIT네이버 원문 이동
- 13IFEFFIT : interactive XAFS analysis and FEFF fitting네이버 원문 이동
- 14In-plane pressure effect in strained YBa 2 Cu 3 O 7 / La 1.85 Sr 0.15 CuO 4 superlattices네이버 원문 이동