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The Effect of Sintering Oxygen Partial Pressure on a SmBiO3 Buffer Layer for Coated Conductors via Chemical Solution Deposition

1
Key Laboratory of Advanced Technologies of Materials, Ministry of Education, Superconductivity and New Energy R&D Center, Southwest Jiaotong University, Chengdu, Sichuan 610031, China
2
School of Materials Science and Engineering, University of New South Wale, Sydney, 2052 NSW, Australia
*
Author to whom correspondence should be addressed.
Academic Editor: Maria Miritello
Coatings 2016, 6(4), 50; https://doi.org/10.3390/coatings6040050
Received: 15 August 2016 / Revised: 29 September 2016 / Accepted: 14 October 2016 / Published: 21 October 2016
The application of high-temperature YBa2Cu3O7−δ (YBCO) superconducting material is a considerable prospect for the growing energy shortages. Here, SmBiO3 (SBO) films were deposited on (100)-orientated yttrium-stabilized zirconia (YSZ) simple crystal substrates via the chemical solution deposition (CSD) approach for coated conductors, and the effects of sintering oxygen partial pressure on SBO films were studied. The crystalline structures and surface morphologies of SBO films were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), and atomic force microscope (AFM). The optimized growth temperature, the intensity ratios of the SBO (200) peak to the SBO (111) peak, and the crystallinities of SBO films increased with the sintering oxygen partial pressure. The SEM and AFM images displayed a smooth and well-distributed surface in the argon atmosphere. The subsequent YBCO films with superconducting transition temperatures (Tc = 89.5 K, 90.2 K, and 86.2 K) and critical current densities (Jc = 0.88 MA/cm2, 1.69 MA/cm2, and 0.09 MA/cm2; 77 K, self-field) were deposited to further check the qualities of the SBO layer. These results indicated that sintering oxygen partial pressure had an effect on the epitaxial growth of the SBO buffer layer and YBCO superconducting properties. The experimental results may be a usable reference for the epitaxial growth of YBCO-coated conductors and other oxides. View Full-Text
Keywords: sintering oxygen partial pressure; epitaxial growth; chemical solution deposition; SmBiO3 films sintering oxygen partial pressure; epitaxial growth; chemical solution deposition; SmBiO3 films
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MDPI and ACS Style

Zhu, X.; Zhao, Y.; Pu, M.; Zhang, Y.; Zhang, H.; Cheng, C. The Effect of Sintering Oxygen Partial Pressure on a SmBiO3 Buffer Layer for Coated Conductors via Chemical Solution Deposition. Coatings 2016, 6, 50.

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