Earticle

초록

영어

We investigated the effect of self-assembled BSO nano-defects as pinning centers in BSO-added GdBCO films when the thicknesses of films were varied. 3.5 vol. % BSO-added GdBCO films with varying thicknesses from 200 nm to 1000 nm were deposited on SrTiO3 (STO) substrate by using pulsed laser deposition (PLD) process. For the films with thicknesses of 400 nm and 600 nm, ‘anomaly shoulders’ in Jc - H characteristic curves were observed near the matching field. The anomaly shoulders appeared in the field dependence of Jc may be attributed to the existence of double pinning mechanisms in thin films. The fit to the pinning force density as a function of reduced field h (H/Hirr) using the Dew-Hughes’ scaling law shows that both the 400 nm- and the 600 nm-thick films have double pinning mechanisms while the other films have a single pinning mechanism. These results indicate that the self-assembled property of BSO result in different role as pinning centers with different thickness.

목차

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

키워드

저자

• J. Y. Oh [ Department of Physics, Chungbuk National University, Cheongju, Korea ]
• H. K. Jeon [ Department of Physics, Chungbuk National University, Cheongju, Korea ]
• J. M. Lee [ Department of Physics, Sungkyunkwan University, Suwon, 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