Publikationsdatum:
2011-09-15
Beschreibung:
We developed Bi 2 O 3 and SiO 2 -doped NiCuZn ferrite for noise-suppression parts or near-field wireless communication parts. Bi and Si reacted selectively by means of sintering at approximately 900 °C, which created the Bi 4 (SiO 4 ) 3 phase. It consisted of two-phase structure of NiCuZn ferrite and Bi 4 (SiO 4 ) 3 , which was sintered densely while suppressing the grain growth of NiCuZn ferrite. As a result, this ferrite had a high saturation magnetization and showed excellent frequency response. This paper shows, furthermore, that the experimental spin resonance frequency was in good agreement with the theoretical ones, whereby the density of NiCuZn ferrite approached the theoretical bulk density.
Print ISSN:
1757-8981
Digitale ISSN:
1757-899X
Thema:
Maschinenbau
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