Strong Enhancement of Critical Current Density in MgB2 Bulk and Ni-Sheathed Tapes With Very Small Dy2O3 Additions

• Main Authors: Chen, Soo Kien, Wei, M., Grasso, G., Malagoli, A., Braccini, V., MacManus Driscoll, Judith L.
• Format: Article
• Language: English; English
• Published: Institute of Electrical and Electronics Engineers 2007
• Online Access: http://psasir.upm.edu.my/id/eprint/7442/1/Strong%20Enhancement%20of%20Critical%20Current%20Density%20in%20MgB2%20Bulk%20and%20Ni.pdf; http://psasir.upm.edu.my/id/eprint/7442/; http://dx.doi.org/10.1109/TASC.2007.898228

A series of polycrystalline samples were prepared by in situ reaction of Dy2O3 (0.5-5.0 wt.%) with Mg + B. While the superconducting transition temperature, Tc remained largely unchanged, the intragrain distribution of nano precipitates of DyB4 and MgO led to strong enhancement in critical current d...