Preparation of Trifluoroacetate Metal Organic Deposition Derived REBa2Cu3Oy Thin Film With High-J c and Low-R s for High-Power High-Temperature Superconducting Transmit Filters
IEEE Transactions on Applied Superconductivity（2023）
摘要
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 (
${J}_{\mathrm{c}}^{\text{sf}}$ ${J}_{\mathrm{c}}^{\text{sf}}$ R
s
). The average
${J}_{\mathrm{c}}^{\text{sf}}$ 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.
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关键词
Critical current density,high-temperature superconducting thin film,superconducting filter,surface resistance,trifluoroacetate metal organic deposition
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