Effect of CeO₂ Deposition Temperature on the Properties of Tl-2212 Superconducting Films Grown on MgO Substrates

Abstract:

The preparation and superconductivity of Tl-2212 films grown on CeO₂-buffered MgO substrates were investigated. AFM showed that the annealing of MgO substrates remarkably improved their crystal quality of surface layers, and led to the surface morphology of substrates evolving into unattached outgrowth structure with ultra-smooth surface. XRD measurements showed that CeO₂ buffer layers grown on MgO annealed at the suitable conditions were pure (00l) phase. The 500 nm thick Tl-2212 films grown on these CeO₂ films subsequently possessed excellent c-axis orientation and superconductivity. The best Tl-2212 film reached a low surface resistance of about 324 μΩ (10 GHz, 77 K), a critical current density as high as 3.5 MA/cm² (77 K, 0 T) and a critical transition temperature of about 108.4 K.

• Periodical: Advanced Materials Research (Volumes 287-290)
• Pages: 188-192
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.287-290.188
• Online since: July 2011
• Authors: Qing Lian Xie, Guo Hua Huang, Yin Song Pan, Lu Ji, hongwei yue, Xin Jie Zhao, Lan Fang, Shao Lin Yan
• Keywords: Deposition Temperature, MgO Substrate, Tl-2212 Superconducting Film

References

[1] S.L. Yan, L. Fang, Q.X. Song, J. Yan, Y.P. Zhu, J.H. Chen and S.B. Zhang: Appl. Phys. Lett., Vol. 63 (1993), p.1845

[2] S.L. Yan, L. Fang, M.S. Si, H.L. Cao, Q.X. Song, J. Yan, X.D. Zhou and J.M. Hao: Supercond.Sci.Technol., Vol. 7 (1994), p.681

[3] W.L. Holstein, L.A. Parisi, C. Wilker and R.B. Flippen: Appl. Phys. Lett., Vol. 60 (1992), p. (2014)

[4] P. Badica, A. Sundaresan, A. Crisan, J. C. Nie, M. Hirai, S. Fujiwara, H. Kito and H. Ihara: Physica C Vol. 383(2003), p.482

DOI: 10.1016/s0921-4534(02)01836-1

[5] Schneidewind H, Manzel M, Bruchlos G and Kirsch K: Supercond.Sci.Technol., Vol. 14(2001), p.200

[6] Nie J C, Yamasaki H, Nakagawa Y, Develos-Bagarinao K, Murugesan M, Obara H and Mawatari Y: Journal of Physics: Conference Series 43(2006), p.353

DOI: 10.1088/1742-6596/43/1/088

[7] Carlson C M, Parilla P A, Siegal M P, Ginley D S, Wang Y T, Blaugher R D, Price J C, Overmyer D L and Venturini E L: Applied Physics Letters 75(16)(1999), p.2479

DOI: 10.1063/1.125054

[8] Susannah C Speller, Wu H Z and Chris R M Grovenor: IEEE Trans. Appl. Supercond., 13(2)(2003), p.2713

[9] Qinglian Xie, Yuting Zhang, Fengcai Fang, Guohua Huang, Lu Ji, Xinjie Zhao, Lan Fang and Shaolin Yan: Advanced Materials Research 194-196(2011): 2384

[10] XIE Qinglian, YOU Feng, HUANG Guohua, LI Jianying, ZUO Tao, HE Ming, JI Lu, ZHANG Yuting, ZHAO Xinjie, FANG Lan, YAN Shaolin: Journal of Synthetic Crystals Vol. 38(2009), p, 1146 (in Chinese)