The award ceremony was held at Kyushu University during the 2015 JIM(The Japan Institute of Metals and Materials) Fall Annual Meeting.
The award is for;
"Development of high coercivity Dy-free Nd-Fe-B permanent magnets has been center of my research interest. Multi-scale microstructure characterizations and micromagnetic simulations have been employed to investigate microstructure-coercivity relationships of Nd-Fe-B magnets. It was found that the reason for the low coercivity is the ferromagnetic exchange coupling of Nd2Fe14B grains through ferromagnetic grain boundary phase. Based on this, we demonstrated that a high coercivity Dy-free ultra-fine grained Nd-Fe-B magnet can be developed by engineering of the grain boundary chemistry by the diffusion of low melting point Nd-Cu alloy through grain boundaries."