Transformation of Bi,Pb-2223 phase from multilayered precursor films

Akiyoshi Matsumoto, Hitoshi Kitaguchi, Yusuke Shimada, Satoshi Hata

Research output: Contribution to journalArticle

Abstract

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.

Original languageEnglish
Article number8673641
JournalIEEE Transactions on Applied Superconductivity
Volume29
Issue number5
DOIs
Publication statusPublished - Aug 1 2019

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Sputtering
sputtering
Annealing
Transmission electron microscopy
X ray diffraction
transmission electron microscopy
annealing
diffraction
pellets
Multilayers
x rays
Impurities
impurities
Scanning electron microscopy
scanning electron microscopy
strontium titanium oxide

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Electrical and Electronic Engineering

Cite this

Transformation of Bi,Pb-2223 phase from multilayered precursor films. / Matsumoto, Akiyoshi; Kitaguchi, Hitoshi; Shimada, Yusuke; Hata, Satoshi.

In: IEEE Transactions on Applied Superconductivity, Vol. 29, No. 5, 8673641, 01.08.2019.

Research output: Contribution to journalArticle

Matsumoto, Akiyoshi ; Kitaguchi, Hitoshi ; Shimada, Yusuke ; Hata, Satoshi. / Transformation of Bi,Pb-2223 phase from multilayered precursor films. In: IEEE Transactions on Applied Superconductivity. 2019 ; Vol. 29, No. 5.
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