High Frequency Permeability of Mn-Zn Ferrite and its Composite Materials
Year: 1997
Type: article
Abstract: : Complex permeability spectra @*=p'-ip") in Mn-Zn ferrite and its composite materials have been studied. In sintered ferrite, resonance-type frequency dispersion was observed at room temperature but decrement ofp ' is steeper than that of ordinary resonance. As the temperature is decreased, onset frequency of dispersion shifts higher and dispersion character changes to relaxation-type. In ferrite composite materials, relaxation characters were also observed at low volume loading samples. Since Kn-Zn ferrite has relatively high electrical conductivity at room temperature, high frequency permeability is suppressed by eddy current. However, lowering of temperature and reduction of ferrite content result in the decrease of eddy current; magnetic resonance such as relaxation-type spin rotational one appears in high frequency region. 1.
DOI: 10.1051/jp4:19971230
Authors: T. Tsutaoka, T. Kasagi, T. Nakamura, K. Hatakeyama
Institutions: Hiroshima University, Toda Kogyo (Japan), NEC (Japan)
Language: English
Subfield: Materials Chemistry
Field: Materials Science
Domain: Physical Sciences
Open Access status: green
OpenAlex ID: W1963784785