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Sintering time and properties of YBa2Cu3O∼7 superconducting ceramics (1995)

Aldica, G. ; Popescu, M. ; Popa, S. ; [et al.]

Springer

Journal of superconductivity 8 (1995), S. 365-372

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ISSN: 1572-9605

Keywords: Superconductor ; Y-Ba-Cu-O ; X-ray diffraction ; SEM ; electric resistivity ; thermoelectric power ; dc magnetization ; critical current density

Source: Springer Online Journal Archives 1860-2000

Topics: Electrical Engineering, Measurement and Control Technology , Physics

Notes: Abstract The effect of annealing duration in oxygen flow on the superconducting characteristics of YBa2Cu3O∼7 bulk ceramics was investigated by structural, electrical, magnetic, and electronic microscopy investigations. The long-time annealing is deleterious for the superconductivity in YBa2Cu3O∼7 ceramics. The optimum time interval for annealing is from 20 to 70 h at 950°C, and within this range the maximum value ofT c is obtained.

Type of Medium: Electronic Resource

URL: http://dx.doi.org/10.1007/BF00728173

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