The Microstructure and Superconducting Properties of Bi,Pb-2223 Thin Film Fabricated by RF Sputtering and Annealing Method

作者：Matsumoto Akiyoshi^*; Kitaguchi Hitoshi; Doi Toshiya; Kajihara Takato; Hata Satoshi

来源：IEEE Transactions on Applied Superconductivity, 2013, 23(3): 7500504.

DOI：10.1109/TASC.2012.2233856

• Anisotropy
• Bi
• critical current density
• Pb2223
• RF sputtering
• thin film

We investigated the microstructures and superconducting properties of Bi,Pb-2223 thin films on SrTiO3(100) fabricated by radio-frequency (RF) sputtering and annealing. Most as-deposited films fabricated by RF sputtering did not exhibit a superconducting transition due to their low crystallinity, their deviation from the composition of Bi-2223, and their low inter-grain connectivity. The as-deposited films did not contain Pb. To obtain the Bi,Pb-2223 phase, we annealed the film with Bi,Pb-2223 pellets and powder. After annealing, we confirmed that the thin film contained Pb. T-c(zero) = 100 K was obtained in Bi,Pb-2223 thin film after post-annealing. We observed strong 00l peaks and a sharp quadrupole in X-ray theta - 2 theta and phi-scan measurements. These results suggest that this film consists of a single phase of Bi,Pb-2223 and has a biaxial orientation.

• 出版日期2013-6