Earticle

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

Abstract
 1. INTRODUCTION
 2. EXPERIMENT
 3. RESULTS AND DISCUSSION
 4. CONCLUSION
 ACKNOWLEDGMENT
 REFERENCES

키워드

저자

• H. K. Jeon [ Department of Physics, Chungbuk National University, Cheongju, Korea ]
• J. K. Lee [ Department of Physics, Chungbuk National University, Cheongju, Korea ]
• D. S. Yang [ Department of Physics Education, Chungbuk National University, Cheongju, Korea ]
• W. N. Kang [ Department of Physics, Sungkyunkwan University, Suwon, Korea ]
• B. Kang [ Department of Physics, Chungbuk National University, Cheongju, Korea ] Corresponding author

참고문헌

발행기관

간행물

표지보기 관심저널 등록

• 간행물명

  한국초전도·저온논문지 (구 한국초전도저온공학회논문지) [Progress in Superconductivity and Cryogenics]

• 간기

  계간

• pISSN

  1229-3008

• eISSN

  2287-6251

• 수록기간

  1999~2026

• 등재여부

  KCI 등재,SCOPUS

• 십진분류

  KDC 427 DDC 537