Earticle

초록

영어

Large grain YBCO bulk superconductors are fabricated by the top-seeded melt growth (TSMG) or top-seeded infiltration growth (TSIG) method. Both growth methods use at least one of YBa2Cu3O7−δ, Y2BaCuO5, BaCuO3 pre-reacted precursor powders. However, the synthesis of the pre-reacted powders includes multiple calcination runs which are cost-bearing and time-consuming. In this work, we report the successful growth of single-domain YBCO bulk superconductors directly by using the powder compact that has been pressed from the mixture of Y2O3, BaCO3 and CuO powders without any intermediate grinding step. Single-domain YBCO bulk superconductor has been also prepared by using Y2O3, BaO2 and CuO powders without intermediate grinding step. Investigations on the trapped magnetic field and microstructure of the melt-processed specimen show that the elimination of the repeated processes of calcinations and pulverization has hardly affected on the crystal growth and the magnetic properties of the grown YBCO bulk superconductors. However, it is thought that the presence of residual carbon affects on the size of Y211 particles in melt-processed YBCO bulk superconductor.

목차

Abstract
1. INTRODUCTION
2. EXPERIMENTALS
3. RESULTS AND DISCUSSION
4. CONCLUSIONS
ACKNOWLEDGEMENTS
REFERENCES

키워드

저자

• Yi-Seul Hong [ Korea Polytechnic University, Siheung, Korea ]
• Chan-Joong Kim [ Korea Atomic Energy Research Institute, Taejon, Korea ]
• Hee-Gyoun Lee [ Korea Polytechnic University, Siheung, 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