New Permanent Magnet Materials from the Critical Materials Institute
David Parker, Lead, “Developing Substitutes”, Critical Materials Institute
The present “roster” of technologically useful permanent magnets, including Nd2Fe14B, SmCo, Alnico, and ferrite, has been in existence for several decades now. All these magnets have undergone extensive optimization efforts, thus making the development of new magnets a challenging task. Nevertheless, the U.S. Department of Energy-funded Critical Materials Institute is hard at work developing new, reduced criticality permanent magnets, to serve the ongoing vehicle electrification, power generation and related technological needs. In this presentation I describe our recent efforts to develop an effective substitute for Nd2Fe14B, transform tetrataenite FeNi from a meteoritic curiosity into an inexpensive, high performing permanent magnet, and to supplement or replace SmCo magnets with alternatives based on the Earth-abundant, less costly Cerium.
Dr. David Parker is the Lead of the “Developing Substitutes” Focus Area of the U.S. DOE-funded Critical Materials Institute. He is a Senior Scientist at Oak Ridge National Laboratory, where he has worked for over 10 years, beginning in 2010, following postdoctoral work at the Naval Research Laboratory and a Ph.D. in Physics from the Univ. of Southern California in 2006. He applies first principles methods to some of the most difficult challenges in materials for energy applications, including magnets, thermoelectrics, ferroelectrics and superconductors.