TY - JOUR
T1 - Transmission electron microscopy studies of YBCO films fabricated by advanced TFA-MOD process
AU - Yamada, K.
AU - Mori, N.
AU - Tada, K.
AU - Tanaka, T.
AU - Teranishi, R.
AU - Mukaida, M.
AU - Toh, S.
AU - Kaneko, K.
AU - Izumi, T.
AU - Shiohara, Y.
N1 - Funding Information:
The authors thank Dr. Tanaka of Kyushu University for his useful technical comment of the TEM observation. Also, the authors would like to acknowledge the Kuwano laboratory of Kyushu University for using the FIB equipment. The present work was supported by the New Energy and Industrial Technology Development Organization (NEDO) as the collaborative research and development of fundamental technologies for superconductivity applications.
PY - 2007/10/1
Y1 - 2007/10/1
N2 - The advanced metal organic deposition using trifluoroacetates (TFA-MOD) is one of the most promising methods for producing superconducting coated conductors. In order to form highly grain aligned YBa2Cu3O7-δ (Y123) films with high JC, it is important to control the microstructures of the films. In the present work, Y123 films were grown by the advanced TFA-MOD method on CeO2 layered LaAlO3 (LAO) substrates. Quenched films were prepared by cooling rapidly during the crystallization stage, and their cross-sectional microstructures were investigated by transmission electron microscopy (TEM). The bright-field images (BFIs) showed existence of some grains, precipitates and their interfaces in the film. Selected area electron diffraction patterns (SAEDPs) were taken from various regions, and a-axis and/or c-axis-oriented structures, amorphous structures, etc. were observed. In addition, Y123 grains, BaF2, CuO and Y2Cu2O5 grains were clarified by the scanning transmission electron microscopy-energy dispersive X-ray spectroscopy (STEM-EDS) analyses.
AB - The advanced metal organic deposition using trifluoroacetates (TFA-MOD) is one of the most promising methods for producing superconducting coated conductors. In order to form highly grain aligned YBa2Cu3O7-δ (Y123) films with high JC, it is important to control the microstructures of the films. In the present work, Y123 films were grown by the advanced TFA-MOD method on CeO2 layered LaAlO3 (LAO) substrates. Quenched films were prepared by cooling rapidly during the crystallization stage, and their cross-sectional microstructures were investigated by transmission electron microscopy (TEM). The bright-field images (BFIs) showed existence of some grains, precipitates and their interfaces in the film. Selected area electron diffraction patterns (SAEDPs) were taken from various regions, and a-axis and/or c-axis-oriented structures, amorphous structures, etc. were observed. In addition, Y123 grains, BaF2, CuO and Y2Cu2O5 grains were clarified by the scanning transmission electron microscopy-energy dispersive X-ray spectroscopy (STEM-EDS) analyses.
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U2 - 10.1016/j.physc.2007.04.289
DO - 10.1016/j.physc.2007.04.289
M3 - Article
AN - SCOPUS:34548415490
SN - 0921-4534
VL - 463-465
SP - 717
EP - 721
JO - Physica C: Superconductivity and its applications
JF - Physica C: Superconductivity and its applications
IS - SUPPL.
ER -