학술논문
Preparation of Trifluoroacetate Metal Organic Deposition Derived REBa2Cu3Oy Thin Film With High-Jc and Low-Rs for High-Power High-Temperature Superconducting Transmit Filters
Document Type
Periodical
Author
Source
IEEE Transactions on Applied Superconductivity IEEE Trans. Appl. Supercond. Applied Superconductivity, IEEE Transactions on. 33(5):1-4 Aug, 2023
Subject
Language
ISSN
1051-8223
1558-2515
2378-7074
1558-2515
2378-7074
Abstract
A trifluoroacetate metal-organic deposition (TFA-MOD) derived (Y 0.77 Gd 0.23 )Ba 2 Cu 3 O y [(Y,Gd)BCO] thin film was prepared on an annealed CeO 2 -buffered R -Al 2 O 3 substrate (25 × 25 mm) for high-power high-temperature superconducting (HTS) transmit filter. The fluctuation of the superconducting transition temperature ( T c ) and the self-field critical current density (${J}_{\mathrm{c}}^{\text{sf}}$) were small, which indicated a uniform thin film. The (Y,Gd)BCO thin film showed high ${J}_{\mathrm{c}}^{\text{sf}}$ and low surface resistance ( R s ). The average ${J}_{\mathrm{c}}^{\text{sf}}$ at 77 K and R s (21.8 GHz) at 77 K were 8.9 MA/cm 2 and 2.3 mΩ, respectively. The TFA-MOD derived (Y,Gd)BCO thin film on an annealed CeO 2 -buffered R -Al 2 O 3 substrate is thus a promising candidate material for high-power HTS transmit filters.