| Issue |
J. Phys. IV France
Volume 07, Number C1, Mars 1997
7th INTERNATIONAL CONFERENCE ON FERRITES
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|---|---|---|
| Page(s) | C1-99 - C1-100 | |
| DOI | https://doi.org/10.1051/jp4:1997128 | |
7th INTERNATIONAL CONFERENCE ON FERRITES
J. Phys. IV France 07 (1997) C1-99-C1-100
DOI: 10.1051/jp4:1997128
570-2 Aza-Matsugashita, Minami-Hatori, narita-shi, Chiba-ken 286, Japan
© EDP Sciences 1997
J. Phys. IV France 07 (1997) C1-99-C1-100
DOI: 10.1051/jp4:1997128
Relaxation Phenomena of MgZn Ferrites
T. Murase, K. Igarashi, J. Sawai and T. Nomura570-2 Aza-Matsugashita, Minami-Hatori, narita-shi, Chiba-ken 286, Japan
Abstract
The decrease of initial permeability (µi) with increasing frequency is enhanced by CuO addition to MgZn ferrite. The
gradual deterioration of µi with frequency is due to a relaxation phenomenon By measuring the temperature dependence of tan δ,
the activation energy of the relaxation was calculated as approximately 0.43eV. From the results of time disaccommodation, the
change in permeability for MgCuZn ferrite was found to be larger than that of MgZn ferrite. Futhermore, the deterioration of µi with
time for both ferrites continued for more than 500 hours.
© EDP Sciences 1997