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- Title
Comparative study of electrical transport and magnetic measurements of Y<sub>3</sub>Ba<sub>5</sub>Cu<sub>8</sub>O<sub>18±δ</sub> and YBa<sub>2</sub>Cu<sub>3</sub>O<sub>7−δ</sub> compounds: intragranular and intergranular superconducting properties
- Authors
Slimani, Y.; Hannachi, E.; Ben Salem, M. K.; Ben Azzouz, F.; Ben Salem, M.
- Abstract
We compare the superconducting properties and flux pinning characteristics between YBa2Cu3O7−δ (called Y-123) and Y3Ba5Cu8O18±δ (called Y-358) compounds. Both samples were synthesized through the solid-state reaction. The samples were examined by X-ray diffraction, and scanning electron microscope coupled with energy dispersive spectrometry. The critical current densities of the prepared samples were investigated using current-voltage, magnetization measurements and ac-susceptibility. It is demonstrated that the Y-358 exhibits better superconducting and pinning properties than the Y-123 one. This may be ascribed to the layered structure and the occurrence of a greater number of insulating layers between the CuO2 planes that act as effective pinning sites and consequently conduce to a better fundamental pinning capacity in Y-358.
- Subjects
YTTRIUM barium copper oxide synthesis; SOLID state chemistry; FLUX pinning; MAGNETIC properties of superconductors; CURRENT-voltage characteristics
- Publication
Applied Physics A: Materials Science & Processing, 2018, Vol 124, Issue 2, p0
- ISSN
0947-8396
- Publication type
Article
- DOI
10.1007/s00339-017-1547-4