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Investigation of the formation of the Bi-2223 phase in multifilamentary Bi-2223/Ag tapes by in situ high temperature neutron diffraction

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4 Author(s)
Fahr, T. ; Inst. for Solid State & Mater. Res., Dresden, Germany ; Trinks, H.-P. ; Schneider, R. ; Fischer, C.

Results of in-situ diffraction experiments in the investigation of multifilamentary Bi-2223/Ag tape superconductors with neutron radiation are reported. The aim is to characterise the formation reaction of the Bi-2223 phase and the changes in the secondary phases assemblage under real reaction conditions without removing of the silver sheath of the composite. Furthermore, the mechanism of the evolution of a fibre texture of the superconducting phases Bi-2212 and Bi-2223 are discussed. Additionally, the results of the in-situ diffraction experiments will be related to the characterisation of the microstructure of quenched specimens done by scanning electron microscopy. Finally, a reaction model of the formation of the Bi-2223 phase within the composite conductor will be discussed

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Applied Superconductivity, IEEE Transactions on  (Volume:11 ,  Issue: 1 )