Topic: Nanocomposite Permanent Magnets: What’s Next?

Speaker: Professor Ping Liu, University of Texas at Arlington, America

Time: 3:00 p.m., July 11, 2016

Venue: Conference Room on the 2nd Floor, Building 8, SCUT North Campus

Abstract:

The emergent large-scale applications of permanent magnets in electric vehicles and wind turbines require high performance magnets without containing heavy rare earths. To design and develop new types of permanent magnets has become extremely important. After research for more than two decades, nanoscale hard magnetic materials, especially exchange-coupled nanocomposite magnets, have shown high opportunities for development of future generations of permanent magnets. Encouraging experimental results obtained from nanocomposite thin films have demonstrated the great potential in energy product enhancement. We will review recent developments in the research in nanostructured permanent magnets with emphasis on bottom-up approaches to fabrication of the hard/soft nanocomposite bulk magnets. Synthesis techniques for hard and hard/soft magnetic nanoparticles will be discussed. Processing of bulk nanocomposite magnets via severe plastic deformation and warm compaction will be presented. Novel approaches based on nanowire application also show a promise for future generation of fully dense or bonded permanent magnets.