Structure and properties of BSCCO-whiskers grown from amorphous precursors with foreign dopants

The process of BSCCO whisker growth from varying Bi 2Sr 2Ca 3Cu 5Al x M y O z ( M = Li, Mg,Pb, Y, Zr, V, Nb, Mo) compositions of amorphous precursor have been investigated. The Al 2O 3ZrO 2 double oxide favours the whisker growth even if the glass precursor contains a crystalline portion. The whisk...

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Published in:Physica. C, Superconductivity Superconductivity, 1996-07, Vol.266 (1), p.115-126
Main Authors: Oskina, T.E., Ponomarev, Ya.G., Piel, H., Tretyakov, Yu.D., Lehndorff, B.
Format: Article
Language:English
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Summary:The process of BSCCO whisker growth from varying Bi 2Sr 2Ca 3Cu 5Al x M y O z ( M = Li, Mg,Pb, Y, Zr, V, Nb, Mo) compositions of amorphous precursor have been investigated. The Al 2O 3ZrO 2 double oxide favours the whisker growth even if the glass precursor contains a crystalline portion. The whiskers grown from a 2235 plate and from 2235AlZr plate had a similar cation composition, but in the second case the Sr and Cu content in the crystal tends to be lower. The Al and Zr additives are distributed uniformly inside the plates with foreign framework fabrication. The variation of whisker structure parameters and superconducting properties have been investigated. The tunnelling characteristics for break junctions of whiskers are discussed and a model of BSCCO whisker growth is presented.
ISSN:0921-4534
1873-2143
DOI:10.1016/0921-4534(96)00334-6