| Numéro |
J. Phys. IV France
Volume 07, Numéro C1, Mars 1997
7th INTERNATIONAL CONFERENCE ON FERRITES
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|---|---|---|
| Page(s) | C1-111 - C1-112 | |
| DOI | https://doi.org/10.1051/jp4:1997133 | |
J. Phys. IV France 07 (1997) C1-111-C1-112
DOI: 10.1051/jp4:1997133
The Effect of Sintering Conditions on the Power Loss Characteristics of Mn-Zn Ferrites for High Frequency Applications
Y.H. Han1, J.J. Suh1, M.S. Shin2 and S.K. Han21 Sung Kyun Kwan University, 300 Chunchun-Dong, Suwon, Korea
2 Isu Ceramic, 112-4 Banpo-Dong, Suhcho-Ku, Seoul, Korea
Abstract
The sintering temperature significantly changed the microstructure and effected the power loss behavior at the frequency range over 100kHz. The best power loss characteristics at 100kHz-200mT and 500kHz-50mT were observed in the samples sintered at 1300°C and 1250°C, respectively. Those results indicated that the power loss depended on the grain size, electrical resistivity and density of sintered cores. To maintain the stoichiometry at the sintering condition, the ferrite cores were processed on the isocomposition lines within the spinel phase boundary when being cooled. The zinc vapor pressure as well as the oxygen partial pressure was controlled. The high zinc loss condition had an adverse effect on the microstructure of the sintered core surface and degraded the power loss characteristics.
© EDP Sciences 1997