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The Effects of Mg Substitution in Bi-2223 Superconductors

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Abstract

The effects of Mg substitution in Bi-2223 superconductor system has been studied for the Bi1.7Pb0.3Sr2Ca2Cu3−x Mg x O y nominal composition (x=0.00, 0.05, 0.10, 0.15 and 0.20) which was prepared by the conventional solid-state reaction. The properties of these compounds have been investigated by measuring the electrical resistivity, X-ray diffraction (XRD) and density. Also, scanning electron microscopy (SEM) was employed to investigate the surface microstructure of the samples. It has been found that the effects of Mg substitution support the development of both the Bi-2212 and Bi-2223 phases. These measurements and analyses enable us to discuss the effects of Mg dopant on superconducting properties. We found that onset critical temperatures (T c, onset) decrease with addition x>0.10 in resistivity measurements. The presence of Mg influenced the microstructure of the samples and decreased the mean grain size of Bi-2223 grains up to x=0.10.

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Authors and Affiliations

  1. Faculty of Arts and Science, Physics Department, Dokuz Eylül University, 35160, Buca, İzmir, Turkey

    Kemal Kocabas, Oya Özkan, Ozlem Bilgili & Yelda Kadıoglu

  2. Faculty of Engineering, Mining Engineering Department, Dokuz Eylül University, 35160, Buca, İzmir, Turkey

    Hatice Yılmaz

Authors
  1. Kemal Kocabas
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  2. Oya Özkan
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  3. Ozlem Bilgili
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  4. Yelda Kadıoglu
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  5. Hatice Yılmaz
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Correspondence to Ozlem Bilgili.

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Kocabas, K., Özkan, O., Bilgili, O. et al. The Effects of Mg Substitution in Bi-2223 Superconductors. J Supercond Nov Magn 23, 1485–1492 (2010). https://doi.org/10.1007/s10948-010-0800-2

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  • DOI: https://doi.org/10.1007/s10948-010-0800-2

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