학술논문

Consideration of Magnetic Flux Distribution in Multi−Filamented YBa2Cu3O7−δ Films by Controlling Crystal Array Using Surface−Modified Substrate
Document Type
Periodical
Source
IEEE Transactions on Applied Superconductivity IEEE Trans. Appl. Supercond. Applied Superconductivity, IEEE Transactions on. 34(3):1-4 May, 2024
Subject
Fields, Waves and Electromagnetics
Engineered Materials, Dielectrics and Plasmas
Zirconium
Yttrium barium copper oxide
Crystals
Substrates
Magnetic flux
Films
Superconductivity
Coated conductors
multi−filamentary superconductors
magnetic flux distribution
YBCO
Language
ISSN
1051-8223
1558-2515
2378-7074
Abstract
Large direct currents can flow through REBa 2 Cu 3 O 7−δ (REBCO) wires without energy loss because of zero resistance. However, they suffer from alternating current (AC) loss. To reduce AC loss, multifilamentation is effective. Motivation of this study is to expand the possibilities of multifilament technology in two points of view. One is to adapt chemical method for film deposition, other is to narrow distance between filaments. In this study, a multifilament of YBa 2 Cu 3 O 7−δ (YBCO) was fabricated using a metal−organic deposition (MOD) method on the substrates modified by a photolithography technique. As a result, a multifilament YBCO film was successfully fabricated using MOD method. Also, narrow distance between filaments in 5 μm was succeeded. These results contribute to expand process options of multifilament fabrication.