ABSTRACT
MgB2 is a trendy material suitable for several superconductor applications such as bulk magnets for compact magnetic resonance imaging (MRI) and nuclear magnetic resonance, electric motors, etc. Several research groups have been trying to improve trapped field and critical current density in MgB2 bulks. In order to develop a cheap, scalable fabrication process, the people ultrasonicated cheap commercial boron using ultrasonication. The precursors were commercial powders of amorphous Mg powder and an ultrasonicated boron powder. Cheap and novel high-energy ultrasonication technique was used on cheap commercial boron precursor to increase superconducting performance of sintered bulk MgB2. Boron refinement up to nanometer regime was achieved without formation of B2O3. The ultrasonication is a cost-effective, impurity-free, and scalable technique and hence a suitable way to synthesize bulk MgB2 for practical applications.
