TY - JOUR
T1 - Transformation of Bi,Pb-2223 phase from multilayered precursor films
AU - Matsumoto, Akiyoshi
AU - Kitaguchi, Hitoshi
AU - Shimada, Yusuke
AU - Hata, Satoshi
N1 - Funding Information:
Manuscript received October 25, 2018; accepted March 19, 2019. Date of publication March 25, 2019; date of current version April 24, 2019. This work was supported in part by NIMS Nanofabrication Platform and in part by Kyushu University in Nanotechnology Platform Project sponsored by the Ministry of Education, Culture, Sports, Science and Technology (MEXT), Japan. (Corresponding author: Akiyoshi Matsumoto.) A. Matsumoto and H. Kitaguchi are with the Research Center for Functional Materials, National Institute for Materials Science, Tsukuba 305-0043, Japan (e-mail:,matsumoto.akiyoshi@nims.go.jp).
Publisher Copyright:
© 2002-2011 IEEE.
PY - 2019/8
Y1 - 2019/8
N2 - Bi,Pb-2223 phase on SrTiO3(100) fabricated by RF sputtering and annealing method have been investigated. We tried to fabricate Bi,Pb-2223 phase using multilayered precursors of Bi-2212 and Ca-Cu-Pb-O. We fabricated a multilayered film as a precursor by using two kinds of sputtering targets of Bi,Pb-2212 and Ca-Cu-Pb-O. After deposition by sputtering, the multi-layered precursor was annealed with Bi,Pb-2223 pellets at 840 °C for 100 h. From the X-ray diffraction (XRD) measurements, the main peaks of the precursor film were of Bi,Pb-2212 phase, but still remained large impurity phase. From the transmission electron microscopy (TEM) and Scanning Transmission Electron Microscopy (STEM) observation, we confirmed that a multilayer combination of a Bi,Pb-2212 layer and Ca-Cu-Pb-O layer was formed. After annealing, we determined the Tc through resistance measurements. The Tc value determined by the four-probe method was Tczero = 104.K. Furthermore, we observed two phases of Bi,Pb-2223 and Bi,Pb-2212 by XRD measurement. These results suggest that the Bi,Pb-2223 phase transformed from multilayered precursor film of Bi,Pb-2212 and Ca-Cu-Pb-O formed.
AB - Bi,Pb-2223 phase on SrTiO3(100) fabricated by RF sputtering and annealing method have been investigated. We tried to fabricate Bi,Pb-2223 phase using multilayered precursors of Bi-2212 and Ca-Cu-Pb-O. We fabricated a multilayered film as a precursor by using two kinds of sputtering targets of Bi,Pb-2212 and Ca-Cu-Pb-O. After deposition by sputtering, the multi-layered precursor was annealed with Bi,Pb-2223 pellets at 840 °C for 100 h. From the X-ray diffraction (XRD) measurements, the main peaks of the precursor film were of Bi,Pb-2212 phase, but still remained large impurity phase. From the transmission electron microscopy (TEM) and Scanning Transmission Electron Microscopy (STEM) observation, we confirmed that a multilayer combination of a Bi,Pb-2212 layer and Ca-Cu-Pb-O layer was formed. After annealing, we determined the Tc through resistance measurements. The Tc value determined by the four-probe method was Tczero = 104.K. Furthermore, we observed two phases of Bi,Pb-2223 and Bi,Pb-2212 by XRD measurement. These results suggest that the Bi,Pb-2223 phase transformed from multilayered precursor film of Bi,Pb-2212 and Ca-Cu-Pb-O formed.
KW - Bi
KW - Pb-2223
KW - RF sputtering
KW - STEM
KW - multilayer
KW - thin film
KW - transformation
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U2 - 10.1109/TASC.2019.2907229
DO - 10.1109/TASC.2019.2907229
M3 - Article
AN - SCOPUS:85065080606
VL - 29
JO - IEEE Transactions on Applied Superconductivity
JF - IEEE Transactions on Applied Superconductivity
SN - 1051-8223
IS - 5
M1 - 8673641
ER -