Effects of La-Co Substitution and Ratio of Ba and Sr on Anisotropic Magnetic Field of Fe<sub>2</sub>-W Ferrites

DOI Web Site 10 References

Bibliographic Information

Other Title
  • Fe<sub>2</sub>-W型フェライトの異方性磁界にLa-Co置換及びBaとSrの比率が及ぼす影響

Abstract

<p>It is known that the anisotropic magnetic fields are improved by La and Co substitutions for M-type ferrite sintered magnets, and the coercive forces are significantly improved. On the other hand, since W-type ferrites have a crystal structure similar to that of M-type ferrites, it is expected that La-Co substitution would improve magnetic properties in the same way. However, evaluations of the effects of La and Co substitution are difficult because sintered bodies with a single phase of W-type has not been obtained and sintering at high temperatures is required. Recently, a method to determine the anisotropic magnetic fields using the saturation asymptotic law was proposed by T. Kuno et al., J. Jpn. Soc. Powder Powder Metallurgy 63 (2016) 1053, which makes it possible to evaluate the anisotropic magnetic fields. In this study, La-Co substituted W-type ferrite powders in the Ba, Sr and (Ba-Sr) based systems were prepared, and the effects of La-Co substitution and the ratio of Ba and Sr on the anisotropic magnetic fields were investigated.</p>

Journal

References(10)*help

See more

Keywords

Details 詳細情報について

Report a problem

Back to top