The current status of R&D activities and major results are briefly reviewed, mainly focusing
on work reported since about 2010. Developments in and perspectives on less-Dy and Dy …

High-performance permanent magnets are indispensable in the production of high-
efficiency motors and generators and ultimately for sustaining the green earth. The central …

Although coercivity is one of the fundamental properties of permanent magnets, it has not
been well understood. In this paper, micromagnetics and thermal activation magnetization …

Temperature-dependent magnetic properties of Nd 2 Fe 14 B permanent magnets, ie,
saturation magnetization M s (T), effective magnetic anisotropy constants K i eff (T)(i= 1, 2 …

Spin-wave and exchange stiffness constants of 22 ferromagnetic compounds have been
deduced from their spontaneous magnetization,\(M_ {\mathrm {s}}\), by using an improved …

We examine the anisotropic properties of the exchange stiffness constant A for a rare-earth
permanent magnet, Nd 2 Fe 14 B, by connecting analyses with two different scales of length …

Low coercivity and its large temperature dependence of a Nd 2 Fe 14 B magnet with respect
to its magnetic anisotropy field have been addressed as the coercivity problem. To elucidate …

We studied the properties of domain walls (DWs) of the Neodymium magnet, Nd 2 Fe 14 B.
Applying an atomistic model, in which the magnetic moments of all atoms and exchange …

The exchange is critical for designing high-performance Nd–Fe–B permanent magnets.
Here we demonstrate through multiscale simulations that the exchange in Nd–Fe–B …

Although the magnetization reversal process in the permanent magnets has long been
studied, it has not been fully revealed. The recent progress of the computational science …