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Precision analysis of magnetization process in Nd2Fe14B sintered magnets

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3 Author(s)
K. Kobayashi ; Inst. of Sci. & Technol., Japan ; K. Itoh ; M. Sagawa

In a previous study, the authors studied the magnetization and demagnetization of Sm12Fe17N3 magnet particles, and found three categories of particles; (1) multi-domain particles (MDP), (2) single-domain particles (SDP) and (3) saturable multi-domain particles (SMDP) that can be magnetized under a certain applied field and behave as SDP after. In this paper, the authors explored this categorization to the Nd2Fe14B sintered magnets in which the strong interactions are expected among the crystal grains. The behavior of SMDP in the sintered magnets, and the origin of enhancement of coercivity with the optimization of annealing temperature are studied using the method of analysis applied to the Sm2Fe17N3 magnet particles.

Published in:

INTERMAG Asia 2005. Digests of the IEEE International Magnetics Conference, 2005.

Date of Conference:

4-8 April 2005