|About this Abstract
||2017 TMS Annual Meeting & Exhibition
||Materials Science for High-Performance Permanent Magnets
||Bulk High-throughput Experimentation to Discover New Hard Magnets
||Dagmar Goll, Gerhard Schneider
|On-Site Speaker (Planned)
Novel magnet materials filling the gap between hard ferrites and Fe-Nd-B are desirable for efficient energy converters. Finding interesting candidates within the huge number of so far unexplored multicomponent systems requires an elaborate concept for efficient screening. Our bulk high-throughput approaches are well-suited to scan rapidly through multicomponent systems. Core of the approach are diffusion couples. These heterogeneous non-equilibrium states allow coverage of the most relevant part of a so far unexplored phase diagram by one single sample. Identification of the magnetic phases and analysis of the corresponding intrinsic magnetic properties is performed by combining different microscopy techniques. From domain size and domain contrast the intrinsic material parameters (saturation magnetization, magnetic anisotropy, Curie temperature) can be deduced. Besides introducing the principles and latest developments of the methodology for its successful application novel hard magnets (e.g. RE-lean/Ce-based, RE-free) and their properties will be presented and discussed within the framework of micromagnetism.