Title :
Comparative Study on the Profiles of Intra-Granular Critical Current Density in SmBCO and YBCO Coated Conductors
Author :
Yoo, Jaeun ; Lee, Sang-Moo ; Jung, Ye-Hyun ; Kwak, Kisung ; Rhee, Joonkyu ; Youm, Dojun ; Kim, Hosup ; Ko, Rock-Kil ; Ha, Hongsoo ; Oh, Sang-Soo ; Oh, Sangjun
Author_Institution :
Dept. of Phys., KAIST, Daejeon, South Korea
fDate :
6/1/2009 12:00:00 AM
Abstract :
We measured the magnetic hysteresis loops (M-H loop) of SmBCO coated conductor (CC) and YBCO-CC by using SQUID-magnetometer. These samples were fabricated by RABiTS method and IBAD method. We found the peak shifts of their M-B loops were qualitatively different. To understand this, we measured the magnetic field profiles, H(x), of SmBCO-CC and YBCO-CC by using scanning Hall probe method and calculated their current profiles, J(x). We found that the contrasting difference of M-B loops of the two types of CC was partly due to the inhomogeneous distributions of field and current, which depend on the sample shapes.
Keywords :
Hall effect; SQUIDs; barium compounds; critical current density (superconductivity); high-temperature superconductors; ion beam assisted deposition; magnetic hysteresis; samarium compounds; superconducting thin films; yttrium compounds; IBAD method; RABiTS method; SQUID-magnetometer; SmBaCuO; YBa2Cu3O7; coated conductors; current profiles; inhomogeneous distributions; intragranular critical current density; magnetic field profiles; magnetic hysteresis loops; peak shifts; scanning Hall probe method; thin films; Hall probe; M-H loop; inhomogeneous distribution; peak shift;
Journal_Title :
Applied Superconductivity, IEEE Transactions on
DOI :
10.1109/TASC.2009.2017957
