Calculations of Demagnetization Curves of Nd-Fe-B Magnets Based on Inhonogeneous Nucleation

Akimasa Sakuma, Shigeru Takeda

Research output: Contribution to journalArticlepeer-review

4 Citations (Scopus)


Demagnetization curves of Nd-Fe-B magnets are evaluated being based on the micro-magnetics for inhomogeneous nucleation, by considering a magnetic planar defect. The inhomogeneous nucleation field, reduced due to the magnetic defect, is increased as an effect of the second anisotropy constant, K2 even though K1>4K2 is satisfied where Kl is the first anisotropy constant. Further, the demagnetization process under the condition where the spin structure is conical is also examined by letting -2K2<K1<0. The nucleation field in this case is also reduced due to the detect and is shown to increase as the angle of applied field goes up.

Original languageEnglish
Pages (from-to)1745-1747
Number of pages3
JournalIEEE Transactions on Magnetics
Issue number5
Publication statusPublished - 1990 Sep
Externally publishedYes

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Electrical and Electronic Engineering


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