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Nobuyuki Shimbo, Materials Development Center Technokogy HQ, TDK Corporation
Abstract
A familiar method to enhance coercivity of neodymium-iron-boron sintered magnet is to diffuse heavy rare earth element into the main phase from the magnet surface through the boundary phase.
In this report, the influence of non-uniform coercivity distribution by diffusing Dy and Tb as heavy rare earth element in thermal demagnetization is studied and the simulation results by JMAG are reported.
