DocumentCode :
1241348
Title :
Microwave properties of large YBCO films on as-prepared and annealed MgO substrates
Author :
Lee, J.H. ; Lim, J. ; Moon, S.H. ; Yun, J.H. ; Choi, Y.H. ; Oh, B. ; Sang Young Lee
Author_Institution :
Dept. of Phys., Konkuk Univ., Seoul, South Korea
Volume :
13
Issue :
2
fYear :
2003
fDate :
6/1/2003 12:00:00 AM
Firstpage :
2875
Lastpage :
2878
Abstract :
We have studied the microwave surface impedance of large YBCO films on as-prepared MgO substrates and on annealed MgO substrates with 50 mm in diameter. YBCO films were prepared by pulsed laser deposition. The surface resistance (RS), homogeneity in the RS, and structural properties of YBCO on annealed MgO appeared improved compared with those of YBCO on as-prepared MgO. The reduced RS of YBCO films on annealed MgO is attributed to improved in-plane orientation of the YBCO grains in the films with local variations in the in-plane orientation of YBCO grains correlated well with the RS for both YBCO films on as-prepared MgO and those on annealed MgO.
Keywords :
annealing; barium compounds; crystal microstructure; high-frequency effects; high-temperature superconductors; magnesium compounds; microwave materials; substrates; superconducting thin films; surface impedance; yttrium compounds; 50 mm; MgO; YBCO grains; YBa2Cu3O7; annealing; large YBCO films; microwave properties; microwave surface impedance; pulsed laser deposition; structure; surface resistance homogeneity; Annealing; High temperature superconductors; Microwave filters; Moon; Pulsed laser deposition; Substrates; Superconducting films; Superconducting filters; Surface resistance; Yttrium barium copper oxide;
fLanguage :
English
Journal_Title :
Applied Superconductivity, IEEE Transactions on
Publisher :
ieee
ISSN :
1051-8223
Type :
jour
DOI :
10.1109/TASC.2003.812029
Filename :
1212222
Link To Document :
https://search.ricest.ac.ir/dl/search/defaultta.aspx?DTC=49&DC=1241348
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