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http://dx.doi.org/10.9714/psac.2022.24.4.029

Superconductivity of HTS REBCO coated conductors with multi-superconducting layers  

Ye Rim, Lee (Div. of Sci. Education and Institute of Sci. Education, Jeonbuk National University)
Kyu Jeong, Song (Div. of Sci. Education and Institute of Sci. Education, Jeonbuk National University)
Gwan Tae, Kim (Superconductivity Research Center, Korea Electrotechnology Research Institute)
Sang Soo, Oh (Superconductivity Research Center, Korea Electrotechnology Research Institute)
Hong Soo, Ha (Superconductivity Research Center, Korea Electrotechnology Research Institute)
Publication Information
Progress in Superconductivity and Cryogenics / v.24, no.4, 2022 , pp. 29-35 More about this Journal
Abstract
We fabricated MHOS (multi-HTS layers on one substrate) high-temperature superconducting (HTS) REBCO conductors using HTS REBCO coated conductor (CC) A-specimen, which induces an artificial magnetic flux pinning effect, and HTS REBCO CC B-specimen, that does not induce this effect. The superconducting magnetic properties of the fabricated MHOS conductors were examined by measuring their magnetic moment m(H) curves using a physical property measurement system (QD PPMS-14). The critical current density (Jc) characteristics of our four-layered MHOS HTS REBCO conductor specimens such as BAAB, BBBB, and AAAA were lower than those of their two-layered and three-layered counterparts. At a temperature T of 30 K the magnetic flux pinning physical indicator δ values (obtained from the relationship Jc ∝ H-δ) of the three-layer ABA (δ = 0.35) and two-layer AB (δ = 0.43) specimens were found to be significantly lower than those of the four-layer ABBA (δ = 0.51), BAAB (δ = 0.60), AAAA (δ = 0.78) and BBBB (δ = 0.81) structures.
Keywords
MHOS HTS Conductor; magnetic moment; critical current density; irreversible magnetization; magnetic flux pinning physical indicator;
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