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Kyutacarは九州工業大学で生産された研究成果を オープンアクセスで提供する機関リポジトリシステムです。 Kyutacar is open-access repository of research by members of the Kyushu Institute of Technology.
Kyushu Institute of Technology
Kyushu Institute of Technology
Kyushu Institute of Technology
Kyushu Institute of Technology
Kyushu Institute of Technology
Kyushu Institute of Technology
Shizuoka University
抄録
Double perovskite Ba2LuNbO6 (BLNO)-doped YBa2Cu3O7−y (YBCO) thin films are fabricated on a SrTiO3 (001) substrate by pulsed laser deposition, and their nanostructures are characterized by transmission electron microscopy and scanning transmission electron microscopy. Cross-sectional observations and elemental mapping reveal that BLNO self-assembles during thin film deposition, and consequently, nanorods extending straight from the substrate to the surface are formed in the YBCO thin films. It is confirmed that stacking faults perpendicular to the growth direction disturb the formation of BLNO nanorods. Strain maps extracted by geometric phase analysis reveal that the tensile strain occurs in the YBCO matrix around the BLNO nanorods. Misfit dislocations are periodically introduced at the interface between the nanorod and the matrix, which results in the inhomogeneous strain of YBCO around the BLNO nanorods. The superconducting properties of the YBCO + BLNO thin films are compared with those of other previously reported YBCO thin films with normal perovskite and double perovskite nanorods.
雑誌名
Journal of Applied Physics
巻
129
号
19
ページ
195301
発行年
2021-05-17
出版者
AIP Publishing
ISSN
0021-8979
1089-7550
書誌レコードID
AA00693547
DOI
https://doi.org/10.1063/5.0048693
権利
This article may be downloaded for personal use only. Any other use requires prior permission of the author and AIP Publishing. This article appeared in Journal of Applied Physics and may be found at https://aip.scitation.org/doi/10.1063/5.0048693.
Nanostructures and flux pinning properties in YBa2Cu3O7−y thin films with double perovskite Ba2LuNbO6 nanorods
JAP21-AR-01048.pdf
(2.39MB)
