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MgB2 with Addition of Bi2O3 Obtained by Spark Plasma Sintering Technique

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Abstract

Bi2O3 and Bi-metal powders were mixed with MgB2 powder. Starting compositions were (MgB2)(Bi2O3) x , x=0.0025, 0.005, 0.015, and (MgB2)(Bi) y , y=0.01. Mixtures were processed by Spark Plasma Sintering (SPS) technique. As obtained composite samples show high density, above 94 % of the theoretical density. Samples with Bi2O3 for x=0.0025 and 0.005 show higher critical current densities, J c, at high fields and at 20 K than for the pristine sample. Their irreversibility field, H irr, is also higher. On the other hand, sample added with Bi-metal has lower J c and H irr at any temperature than for the pristine sample.

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Acknowledgements

Work was performed with financial support from PCCE 9/2010, Romania.

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Correspondence to P. Badica.

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Burdusel, M., Aldica, G., Popa, S. et al. MgB2 with Addition of Bi2O3 Obtained by Spark Plasma Sintering Technique. J Supercond Nov Magn 26, 1553–1556 (2013). https://doi.org/10.1007/s10948-012-2015-1

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  • DOI: https://doi.org/10.1007/s10948-012-2015-1

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