The microstructure and superconducting properties of Bi,Pb-2223 thin film fabricated by RF sputtering and annealing method

Akiyoshi Matsumoto; Hitoshi Kitaguchi; Toshiya Doi; Takato Kajihara; Satoshi Hata

doi:10.1109/TASC.2012.2233856

The microstructure and superconducting properties of Bi,Pb-2223 thin film fabricated by RF sputtering and annealing method

Akiyoshi Matsumoto, Hitoshi Kitaguchi, Toshiya Doi, Takato Kajihara, Satoshi Hata

Materials Physics and Engineering

Research output: Contribution to journal › Article › peer-review

6 Citations (Scopus)

Abstract

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 intergrain 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 θ - 2θ and φ-scan measurements. These results suggest that this film consists of a single phase of Bi,Pb-2223 and has a biaxial orientation. The Bi,Pb-2223 thin film had a maximum J_c of 0.1 × 10 ⁵A/cm² at 78 K in a magnetic field of 2 T. Furthermore, Bi,Pb-2223 exhibited very strong anisotropy in its J_c-B angle characteristics.

Original language	English
Article number	6397571
Journal	IEEE Transactions on Applied Superconductivity
Volume	23
Issue number	3
DOIs	https://doi.org/10.1109/TASC.2012.2233856
Publication status	Published - 2013

All Science Journal Classification (ASJC) codes

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

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10.1109/TASC.2012.2233856

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title = "The microstructure and superconducting properties of Bi,Pb-2223 thin film fabricated by RF sputtering and annealing method",

abstract = "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 intergrain 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 czero = 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 θ - 2θ and φ-scan measurements. These results suggest that this film consists of a single phase of Bi,Pb-2223 and has a biaxial orientation. The Bi,Pb-2223 thin film had a maximum Jc of 0.1 × 10 5A/cm2 at 78 K in a magnetic field of 2 T. Furthermore, Bi,Pb-2223 exhibited very strong anisotropy in its Jc-B angle characteristics.",

author = "Akiyoshi Matsumoto and Hitoshi Kitaguchi and Toshiya Doi and Takato Kajihara and Satoshi Hata",

year = "2013",

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language = "English",

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T1 - The microstructure and superconducting properties of Bi,Pb-2223 thin film fabricated by RF sputtering and annealing method

AU - Matsumoto, Akiyoshi

AU - Kitaguchi, Hitoshi

AU - Doi, Toshiya

AU - Kajihara, Takato

AU - Hata, Satoshi

PY - 2013

Y1 - 2013

N2 - 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 intergrain 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 czero = 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 θ - 2θ and φ-scan measurements. These results suggest that this film consists of a single phase of Bi,Pb-2223 and has a biaxial orientation. The Bi,Pb-2223 thin film had a maximum Jc of 0.1 × 10 5A/cm2 at 78 K in a magnetic field of 2 T. Furthermore, Bi,Pb-2223 exhibited very strong anisotropy in its Jc-B angle characteristics.

AB - 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 intergrain 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 czero = 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 θ - 2θ and φ-scan measurements. These results suggest that this film consists of a single phase of Bi,Pb-2223 and has a biaxial orientation. The Bi,Pb-2223 thin film had a maximum Jc of 0.1 × 10 5A/cm2 at 78 K in a magnetic field of 2 T. Furthermore, Bi,Pb-2223 exhibited very strong anisotropy in its Jc-B angle characteristics.

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The microstructure and superconducting properties of Bi,Pb-2223 thin film fabricated by RF sputtering and annealing method

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