Surface characterization of as-grown CeO&lt;SUB&gt;2&lt;/SUB&gt; cap layer morphology evolution and critical current density of post-deposited YBCO films

Huang, R.; Shi, Kai; Zhang, Y. Y.; Han, Z. H.; Feng, Feng; Xiao, Shaozhu; Qu, Timing; Zhu, Yi; Lu, Haipeng; Hou, Zibing

doi:10.1166/mex.2015.1265

Cited by 6 publications

(3 citation statements)

References 16 publications

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“…(3) where ∆M is the difference of magnetization at a field, in emu/cm 3 , a is the area of the inscribed circle, in cm and J is critical density in A/cm 2 . Figure 8 shows the plots of the current density J against the field in Tesla, at 77K it explains that the 50 pulses of the YBCO/CeO 2 in the multilayer gave highest J c which was about 4.1 MA/cm 2 this agrees with other report (Huang, Li, Wang, Qi, Sebastain, Haugan &Wang, 2017;Xu, Liu, Wang, Zhu, Zhu & Li, 2012;Lee, Kim, Park & Park, 1996;Feng, Zhang, Qu, Huang, Xiao, Zhu, Lu, Shi, &. Han, 2015) against the pure YBCO and we observed that the more CeO 2 was added in the multilayer the less the J c , and T c we got, and this did not affect its structural properties.…”

Section: Multilayer Deposition Of Ybco/ceosupporting

confidence: 86%

“…(Solovyov, Bagarinao, Li, Si, Win, Zhou, Wiesmann & Qing, 2010), used active (001) Ceria (CeO 2 ) buffer to modify the structure of the epitaxial high temperature superconductor YBCO which resulted with 0.8 m thick film exhibiting strong enhancement of the critical current density of 4.2MA/cm 2 . (Feng et al, 2015), used CeO 2 cap layers for high temperature superconducting, were YBCO films were epitaxially deposited on the as-growth CeO 2 / YSZ (001) stack using water-free metal organic deposition (MOD) method to obtain 1.92MA/cm 2 as J c at 77K at 0.5Pa deposition pressure.…”

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confidence: 99%

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Enhancement of Critical Current Density of Yttrium Barium Copper Oxide Thin Films by Introducing Nano dimensional Cerium Oxide Defects

Emeakaroha¹,

James²,

Kebede³

2018

APR

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The critical current density, Jc  has been the most important parameter used in the design and engineering of effective devices which is one of the implementation of high temperature superconductors (HTSC). In this work, an effort has been made to further improve the critical current density of YBa2Cu3O7-x (YBCO) thin films by preventing the magnetic flux line lattice against the Lorentz force by pinning it in place with the aid of nano-dimensional defects. These defects were generated by distributing nano sized CeO2 islands after YBCO layer was created on LaAlO3 substrates perpendicular to the film using pulsed laser deposition (PLD) technique. Three samples with buffer layers of CeO2 were prepared. CeO2 with 50 pulses, 100 pulses and 150 pulses, after each 1000 pulses of YBCO were prepared five layers for each of the samples. The structural characterization of YBCO/CeO2 and YBCO pristine films were carried out using x-ray diffraction (XRD) and scanning electron microscopy (SEM). Superconducting proprieties were measured using a vibrating sample magnetometer (VSM). Jc  for the pure YBCO and the YBCO/CeO2 films were calculated from magnetization (M) versus Field (H) loops using Bean’s model. Jc  for the 50 pulses of YBCO/CeO2 films was found to be increased slightly by an order of magnitude of about 40% with respect to those of YBCO films without the nano dimensional defects.

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Section: Multilayer Deposition Of Ybco/ceosupporting

confidence: 86%

mentioning

confidence: 99%

Enhancement of Critical Current Density of Yttrium Barium Copper Oxide Thin Films by Introducing Nano dimensional Cerium Oxide Defects

Emeakaroha¹,

James²,

Kebede³

2018

APR

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“…In MOD-YBCO fabrication, BaCeO 3 can form easily because of the interfacial chemical reaction of the CeO 2 buffer layer and Ba-containing precursors [23][24][25], which was also observed in figure 9(b). Moreover, it was reported by Coll et al [26] that the epitaxial relationship between BaCeO 3 and YBCO was not favorable, with a mismatch of about 14%.…”

Section: Location Of Delamination Occurrencementioning

confidence: 71%

Critical current survival in the YBCO superconducting layer of a delaminated coated conductor

Feng¹,

Fu²,

Qu³

et al. 2018

Supercond. Sci. Technol.

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High temperature superconducting coated conductor (CC) could be practically applied in electric equipment due to its favorable mechanical properties and the critical current performance of YBCO superconducting layer. It is well known that CC could be easily delaminated because of its poor stress tolerance in thickness direction, i.e. along the c-axis of YBCO. Commonly, a stack including YBCO layer and silver stabilizer could be obtained after the delamination. It would be interesting to investigate the superconducting properties of the delaminated stack, since it could also be considered as a new type of CC with the silver stabilizer as the buffer layer, which is quite different from the oxide buffer layers in the traditional CC and might lead to new applications. In this study, a CC sample was delaminated by liquid nitrogen immersing. A Hall probe scanning system was employed to measure the critical current (IC) distribution of the original sample and the obtained stack. It was found that IC could be partially preserved after the delamination. Dense and crack-free morphologies of the delaminated surfaces were observed by scanning electron microscopy, and the potential application of the obtained stack in superconducting joint technology was discussed.

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Polymer-assisted chemical solution deposition of high-quality La2Zr2O7 buffer layer applied to low-cost YBCO-coated conductors

Zhang

Xia

Pan

et al. 2020

J Mater Sci: Mater Electron

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Surface characterization of as-grown CeO<SUB>2</SUB> cap layer morphology evolution and critical current density of post-deposited YBCO films

Cited by 6 publications

References 16 publications

Enhancement of Critical Current Density of Yttrium Barium Copper Oxide Thin Films by Introducing Nano dimensional Cerium Oxide Defects

Enhancement of Critical Current Density of Yttrium Barium Copper Oxide Thin Films by Introducing Nano dimensional Cerium Oxide Defects

Critical current survival in the YBCO superconducting layer of a delaminated coated conductor

Polymer-assisted chemical solution deposition of high-quality La2Zr2O7 buffer layer applied to low-cost YBCO-coated conductors

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