Magnetic relaxation of highly textured Bi2Sr2CaCu2O8+δ polycrystalline fibres

Martínez, Elena; Angurel, L.A.; Díez, J. C.; Lera, F.; Navarro, Rafael

doi:10.1016/s0921-4534(96)00519-9

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A Phase Composition and Alignment1

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Cited by 10 publications

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“…10 Several types of grain boundaries interconnect the colonies. These low-angle grain boundaries have been considered as the main cause of the reported irreversibility line shifts on these samples, 14,15 as well as for the transport current behavior in the self-field at temperatures approaching T c . 3).…”

Section: A Phase Composition and Alignmentmentioning

confidence: 99%

Phase growth and microstructure modifications induced by annealing in highly textured superconducting Bi-2212 thin rods

Mora

Martínez²,

Díez³

et al. 2000

J. Mater. Res.

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Bi-2212 cylindrical rods were obtained using a laser-induced directional solidification system. Although as-grown Bi-2212 samples are well textured, they do not exhibit superconducting behavior and, as a result, need further heat treatments. The modifications taking place during annealing were analyzed in the present work, in particular with respect to the evolution of the microstructure with the annealing time and the phase content. Diffusion processes in which the Bi-2212 phase grows along the thickness of the platelets take place during annealing. The presented results show that the physical properties of these samples improve during the initial approximately 60 h of annealing and that they remain constant thereafter.

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Section: A Phase Composition and Alignmentmentioning

confidence: 99%