Influence of preparation conditions on superconducting properties of Bi-2223 thin films

Bulletin of materials science

N K Man²  D D Dung²  A Sundaresan¹  N T Mua³ 

[1] Chemistry and Physics of Materials Unit and International Centre for Materials Science, Jawaharlal Nehru Centre for Advanced Scientific Research, Bangalore 560 064, India$$Chemistry and Physics of Materials Unit and International Centre for Materials Science, Jawaharlal Nehru Centre for Advanced Scientific Research, Bangalore 560 064, IndiaChemistry and Physics of Materials Unit and International Centre for Materials Science, Jawaharlal Nehru Centre for Advanced Scientific Research, Bangalore 560 064, India$$;International Training Institute for Materials Science (ITIMS), Hanoi University of Science and Technology, No. 1, Dai Co Viet Road, Hanoi, Vietnam$$International Training Institute for Materials Science (ITIMS), Hanoi University of Science and Technology, No. 1, Dai Co Viet Road, Hanoi, VietnamInternational Training Institute for Materials Science (ITIMS), Hanoi University of Science and Technology, No. 1, Dai Co Viet Road, Hanoi, Vietnam$$;Police Department of Fire Prevention Fire Fighting and Rescue, No. 2, DinhLe Road, Hoan Kiem District, Hanoi, Vietnam$$International Training Institute for Materials Science (ITIMS), Hanoi University of Science and Technology, No. 1, Dai Co Viet Road, Hanoi, Vietnam$$Police Department of Fire Prevention Fire Fighting and Rescue, No. 2, DinhLe Road, Hoan Kiem District, Hanoi, VietnamPolice Department of Fire Prevention Fire Fighting and Rescue, No. 2, DinhLe Road, Hoan Kiem District, Hanoi, Vietnam$$International Training Institute for Materials Science (ITIMS), Hanoi University of Science and Technology, No. 1, Dai Co Viet Road, Hanoi, Vietnam$$International Training Institute for Materials Science (ITIMS), Hanoi University of Science and Technology, No. 1, Dai Co Viet Road, Hanoi, VietnamPolice Department of Fire Prevention Fire Fighting and Rescue, No. 2, DinhLe Road, Hoan Kiem District, Hanoi, Vietnam$$International Training Institute for Materials Science (ITIMS), Hanoi University of Science and Technology, No. 1, Dai Co Viet Road, Hanoi, Vietnam$$

关键词: Bi-2223;    thin film;    pulsed laser deposition;    critical current density.;   

DOI  :  

学科分类：材料工程

来源: Indian Academy of Sciences

【 摘 要 】

We report electrical transport properties of Bi₂Sr₂Ca₂Cu₃O_{10+ð‘�?} (Bi-2223) superconducting thin films fabricated by pulsed-laser deposition on SrTiO₃ substrate. The aim of the study was to investigate the influence of preparation conditions such as deposition temperature (ð‘�??_S), annealing time (ð‘�?_A) and deposition rate (ð‘�?). A critical temperature (ð‘�??_c) as high as 110 K and critical current density (𝐽_c) of 6.2 Ã�? 10⁶ A/cm² at 20 K were obtained for ð‘�??_S = 760° C, ð‘�?_A = 4h and ð‘�? = 1.5 Ã�?/s. We also investigated the effect of Li doping on Bi-2223 thin films. Li intercalation results in high resistive onset transition temperature and the resistivity shows broadening in magnetic field that increases with field. The large broadening of resistivity curve in magnetic field suggests that this phenomenon is directly related to the intrinsic superconducting properties of the copper oxide superconductors. The sudden drop in 𝐽_c at relatively low magnetic field (𝐻 < 0.5 tesla) is due to the effect of Josephson weak-links at the grain boundaries.

【 授权许可】

Unknown