Properties of YBCO superconductors prepared by ammonium nitrate melt and solid-state reaction methods

Sözeri, H.; Özkan, H.; Ghazanfari, Nader

doi:10.1016/j.jallcom.2006.03.038

Cited by 20 publications

(6 citation statements)

References 16 publications

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“…Aerosol pyrolysis [1], chemical co-precipitation [2], hydrothermal reaction [3], sol-gel [4], oxidation technique using nitric acid (HNO 3 ) [5] and self propagating high temperature synthesis [6] are some examples. Synthesis in an ammonium nitrate melt can also be preferred to solid state reaction route for magnetic materials [7] as well as for ceramic superconductors [8,9]. It is well known that synthesis method strongly determines the homogeneity, average particle size and shape, thus the magnetic characteristics of the final product.…”

Section: Introductionmentioning

confidence: 99%

Effect of pelletization on magnetic properties of BaFe12O19

Sözeri

2009

Journal of Alloys and Compounds

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Section: Introductionmentioning

confidence: 99%

Effect of pelletization on magnetic properties of BaFe12O19

Sözeri

2009

Journal of Alloys and Compounds

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“…The structural analysis using the Rietveld method showed that YBC crystallizes in the orthorhombic Pmmm space group. Despite the excellent results obtained from this synthetic method, it was not possible to avoid the formation of BaCuO 2 [26][27][28] (less than 1 wt. % according to the Rietveld refinement).…”

Section: Structural and Thermal Analysismentioning

confidence: 96%

Synthesis and Characterization of High Temperature Properties of YBa2Cu3O6+δ Superconductor as Potential Cathode for Intermediate Temperature Solid Oxide Fuel Cells

Grassi

Macías

Basbus

et al. 2021

J. Mater. Sci. Technol. Res.

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YBa2Cu3O6+δ (YBC) oxygen deficient perovskite was synthesized by an auto-combustion method and was studied as potential cathode for Intermediate Temperature Solid Oxide Fuel Cell (IT-SOFC). Synchrotron X-ray thermodiffraction in air shows a phase transition from orthorhombic Pmmm to tetragonal P4/mmm space groups at ~ 425 °C. The chemical compatibility with Ce0.9Gd0.1O1.95 (GDC) electrolyte was investigated in air where certain reactivity was observed above 800 °C. However, the main phase is Ba(Ce1-xYx)O3, a good ionic conductor. The catalytic performance in air was obtained by electrochemical impedance spectroscopy (EIS) measurements on YBC/GDC/YBC symmetrical cells. The area specific resistance (ASR) values change from 13.66 to 0.14 Ω cm2 between 500 and 800 °C, with activation energy (Ea) of 0.41 eV. The results suggest potential applications of YBC as IT-SOFC cathode.

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“…The resulting Y123 materials demonstrate an improvement in critical current density of the superconducting phase when compared with solid-state syntheses, 32,33 and act as proof-of-concept that GO can be used as a template for complex oxides.…”

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confidence: 90%