1. High Energy Ferrite Magnets
- Author
-
Yoshihiko Minachi, Kiyoyuki Masuzawa, K. Suwa, T. Takeishi, and Hitoshi Taguchi
- Subjects
010302 applied physics ,Chemistry ,Analytical chemistry ,General Physics and Astronomy ,chemistry.chemical_element ,02 engineering and technology ,Zinc ,021001 nanoscience & nanotechnology ,01 natural sciences ,Grain size ,Magnetization ,Magnetic anisotropy ,Nuclear magnetic resonance ,[PHYS.HIST]Physics [physics]/Physics archives ,Magnet ,0103 physical sciences ,Lanthanum ,Curie temperature ,0210 nano-technology ,Chemical composition - Abstract
Lanthanum and zinc substitution in M-type hexaferrite was studied in detail in order to increase the saturation magnetization. For the composition Sr 0.7 La 0.3 Fe 11.7 Zn 0.3 O 19, the saturation magnetization was increased by more than 4% and the uniaxial anisotropy constant (K 1 ) was almost the same as that of non-substituted Ba-ferrite. Furthermore, high energy ferrite magnets having more than 40kJ/m 3 (5MGOe) were obtained for the first time by the new process for high orientation, high density and submicron-sized grains.
- Published
- 1997