Earticle

초록

영어

We studied the distribution of the current density and its magnetic-field dependence in GdBCO coated conductors with AC bias currents using low temperature scanning Hall probe microscopy. We selectively measured magnetic field profiles from AC signal obtained by Lock-in technique and calculated current distributions by inversion calculation. In order to confirm the AC measurement results, we applied DC current corresponding to RMS value of AC current and compared distribution of AC and DC transport current. We carried out the same measurements at various external DC magnetic fields, and investigated field dependence of AC current distribution. We notice that the AC current distribution unaffected by external magnetic fields and preserved their own path on the contrary to DC current.

목차

Abstract
 1. INTRODUCTION
 2. EXPERIMENTAL PROCEDURES
  2.1. Samples
  2.2. Measurement technique
 3. EXPERIMENTAL RESULTS
  3.1. Temperature dependence of resistivity
  3.2 Comparison between DC and AC current density distribution
  3.3 Field dependence of AC current distribution
 4. CONCLUSIONS
 ACKNOWLEDGMENT
 REFERENCES

키워드

저자

• Chan Kim [ Kyungpook National University, Daegu, Korea ]
• Mu Young Kim [ Kyungpook National University, Daegu, Korea ]
• Hee Yeon Park [ Kyungpook National University, Daegu, Korea ]
• Hyeong-Ceoul Ri [ Kyungpook National University, Daegu, 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

  1999~2025

• 등재여부

  KCI 등재,SCOPUS

• 십진분류

  KDC 427 DDC 537