Department of Magnetic Materials
- Head of Department
Lee, Jung-Goo
Department Introduction
Department of Magnetic Materials has been performing the researches on the development of new fabrication processes for magnetic powder materials and the organic-inorganic composite/bulk magnet, and their application. Based on these backgrounds, construction of research infrastructure and capacities will be strengthened toward the R&D for new functional electronic components, energy-conversion devices, electromagnetic wave control devices, smart sensing, and active devices, etc.
Major Activities
- Development of cost-effective and high-performance Nd-saving permanent magnets: 2 papers published, 3 domestic patents, applied, 2 international patents applied, royalty 330 million KRW.
- Development of rare-earth-free permanent magnetic materials : 8 papers published, 2 domestic patents applied, and 1 domestic patent registered.
- Development of ferrite permanent magnetic materials : 2 domestic patents applied, 1 paper published (back cover published in Dalton Transactions).
- Development of Ultra-wideband millimeter-wave absorbing magnetic materials: 1 domestic patent applied, 2 domestic patents registered, 1 paper published.
Major Research Area
- Fabrication of cost-effective and high-performance Nd-saving magnets and their application technologies, and their recycling technologies
- Development of fabrication processes for rare-earth free magnetic particles and bulk magnets for permanent magnet applications
- Development of oxide magnetic nanomaterials
- Development of millimeter-wave absorbing magnetic materials
Future Research Plan
- Design of novel composition and fabrication technologies for development of rare-earth permanent magnets
- Development of recycling/reuse technologies for achieving high-performance in waste permanent magnets
- Alloy design and new process for rare-earth free/rare earth lean magnetic material compound
- Development of advanced consolidation technology for oxide magnetic materials
- Development of magnetic materials with enhanced absorption ability of millimeter-wave
- Smart magnetic composites that can move with high DOF(degree of freedom)
Major R&D Activities
Development of cost-effective and high-performance Nd-saving rare-earth permanent magnets
- The aim of this work is to develop the microstructure control technology that can improve the hard magnetic performance of rare-earth permanent magnets while reducing their Nd content, which accounts for 55% of the price of rare-earth permanent magnets.
- Through the development of a novel process and microstructure control technologies, 30% of Nd in the magnets can be replaced with a low-cost element, and the hard magnetic performance comparable to that of commercial high-performance Nd-based magnets (N45H-grade) can be realized (World record).
- Microstructure control technology to suppress the formation of paramagnetic secondary phases in the Nd-saving magnets is developed.
- Optimum distribution of low-cost elements within the Nd-saving magnets is established.
Development of fabrication processes for rare-earth free magnetic particles and bulk magnets for permanent magnet applications
- Researches new magnetic materials using electronic and crystal structures of magnetic materials based on multi-functional simulations, and development of super-magnet with high magnetic and physical properties using high clarke number element for a next-generation electric vehicle, eco-friendly generator, IT equipment, etc.
Development of rare element free magnetic materials for miniaturized motors
- Development of fabrication and application technology for high-performance ferrite permanent magnet without assistance of rare elements such as La, Co, etc.
- Development of Na-doped M-type hexaferrite nanoparticles and enhancement of their performance by defect chemistry
- Development of high-performance oxide magnetic materials via field-assisted forming process
- Development of rare element free oxide magnetic materials for the sustainable processing
Development of Ultra-wideband millimeter-wave absorbing magnetic materials
- Securing of iron oxide magnetic materials with millimeter-wave absorption ability in both v band and w band
- Commercially viable process to synthesize millimeter-wave absorbing iron oxides
- 1 domestic patent applied, 2 domestic patents registered, 1 SCI paper published