Magnetic properties and critical currents of bulk MgB2 polycrystalline superconductor

作者: D.A Cardwell , N Hari Babu , M Kambara , A.M Campbell

DOI: 10.1016/S0921-4534(02)00988-7

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摘要: Abstract Bulk, polycrystalline MgB 2 has been fabricated in the undoped state and with Cu, Ag Zn doped on Mg site. We report results of magnetic measurements these samples over a wide range temperatures applied fields use to discuss effect grain boundaries current carrying properties this system field. Analysis normalised pinning force as function reduced field reveals increased strength former at higher fields.

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