SAMURAI - NIMS Researchers Database

HOME > プロフィール > セペリ アミン ホセイン




日本金属学会, 日本磁気学会


Magnetic materials for green energy conversions


Permanent Magnets, Soft magnets, Magnetocaloric, Hysteresis, Microstructure


Magnetic materials are essential component in the green energy conversions and play a critical role in realizing carbon neutrality. Our research is dedicated to the development of bulk magnetic materials with three major research focuses on the permanent magnets, soft magnets, and magnetocaloric materials through materials development, microstructure design, and hysteresis engineering.


New demands on magnetic materials have urged researchers to design materials and their microstructures to realize desired magnetic properties. For this purpose, we are using a worldwide unique combinatorial research approach involving micromagnetic simulations, data science, physical property/microstructure characterizations, and materials processing.



Our research has three main areas: (i) Development of high performance permanent magnets without reliance on scarce elements and divergence of rare earth elements. Improvement of thermal stability of magnets and transverse thermoelectric properties of permanent magnets are also being investigated. We are also working on (ii) the development of soft magnetic materials with low core losses for high-frequency applications, and (iii) magnetoclaoric materials with giant and reversible magnetoclaoric effect for room-temperature applications such as magnetic air conditioning and cryogenic applications for gas liquefaction. For these purposes, we use a combinatorial research approach as demonstrated in Figure 1.


The development of high performance magnetic materials requires an understanding of the complicated phenomenon of various physical and magnetic properties of materials that are cross-coupled with multi-scale microstructural features. This is the focus of our research interest to develop novel materials with desired magnetic properties.