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Frequency dispersion of permeability in ferrite composite materials

✍ Scribed by T. Nakamura; T. Tsutaoka; K. Hatakeyama

Book ID
113320063
Publisher
Elsevier Science
Year
1994
Tongue
English
Weight
839 KB
Volume
138
Category
Article
ISSN
0304-8853

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✦ Synopsis

Permeability spectra of Ni-Zn ferrite composite materials, prepared by mixing the ferrite particles with EVA resin, have been studied. In the sintered ferrite (volume fraction l.O>, the spin resonance is around 9 MHz and the static permeability about 1400. As the ferrite content decreases (composite materials), the static susceptibility of the spin component decreases and the spin resonance frequency shifts higher. The real part of the permeability in the ferrite composite materials becomes larger than that of the sintered ferrite in the rf frequency region. These features have been analyzed using the magnetic circuit model. The application of Snoek's limit extended to ferrite composite materials is also proposed.

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Frequency dispersion model of the comple
Frequency dispersion model of the complex permeability of the epoxy—ferrite composite
✍ Hyung Do Choi; Kyoung Sik Moon; In Soo Jeon; Wang Sup Kim; Tak Jin Moon 📂 Article 📅 1997 🏛 John Wiley and Sons 🌐 English ⚖ 192 KB 👁 2 views

The factors that influence the complex permeability of the epoxy-ferrite composite were investigated, and the frequency dispersion behavior model for the complex permeability was proposed. The complex permeability of the composite was measured by an impedance/gain phase analyzer and a network analyz