Cellulose-Bound Magnesium Diboride Superconductivity

Y. L. Lin; M. O. Pekguleryuz; J. Lefebvre; C. J. Voyer; D. H. Ryan; M. Hilke

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arXiv · 0907.1744

Cellulose-Bound Magnesium Diboride Superconductivity

Y. L. Lin·M. O. Pekguleryuz·J. Lefebvre·C. J. Voyer·D. H. Ryan·M. Hilke

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Abstract

Two-phase superconductor tapes were produced by blending high purity magnesium diboride powder with a liquid ethylcellulose-based polymeric binder. This procedure produced a material which is easily formable with a high superconducting transition temperature (38K). We show that the bulk superconducting properties are not affected by the presence of the binder, nor is there any evidence of a chemical reaction between the superconducting particles and the binder. However, the transport properties of the material are strongly affected by the presence of the binder, which leads to a seven order of magnitude increase of the normal state resistance along with a seven order of magnitude decrease of the transport critical current density. This new material is shown to be equivalent to a system of coupled Josephson junctions.

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Y. L. Lin, M. O. Pekguleryuz, J. Lefebvre, C. J. Voyer, D. H. Ryan, M. Hilke. 2009-07-10. Cellulose-Bound Magnesium Diboride Superconductivity. https://arxiv.org/abs/0907.1744

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