| Issue |
J. Phys. IV France
Volume 07, Number C1, Mars 1997
7th INTERNATIONAL CONFERENCE ON FERRITES
|
|
|---|---|---|
| Page(s) | C1-227 - C1-228 | |
| DOI | https://doi.org/10.1051/jp4:1997186 | |
7th INTERNATIONAL CONFERENCE ON FERRITES
J. Phys. IV France 07 (1997) C1-227-C1-228
DOI: 10.1051/jp4:1997186
1 Institute of Physics and Technology of Materials, P.O. Box MG-7, 76900 Bucharest-Magurele, Romania
2 Bucharest University, Physics Department, 76900 Bucharest-Magurele, Romania
© EDP Sciences 1997
J. Phys. IV France 07 (1997) C1-227-C1-228
DOI: 10.1051/jp4:1997186
Interfacial Dielectric Losses in Co-Doped Ni-Zn Ferrites
G. Nicoara1, M. Steflea2 and M. Toacsan11 Institute of Physics and Technology of Materials, P.O. Box MG-7, 76900 Bucharest-Magurele, Romania
2 Bucharest University, Physics Department, 76900 Bucharest-Magurele, Romania
Abstract
The temperature and frequency dependence of tg δ and ε' for Ni0.8Zn0.2CoxFe2-x ferrites was studied in the 102-106 Hz frequency range and 20-200°C temperature range. The experimental curves exhibit aspects very dependent of composition. To verify that interfacial losses, expected to appear in this type of system, are compatible with the experimental results a calculation of the dielectric permittivity and dielectric loss using the Koops' model was made. A good correlation between calculated and experimental curves was found.
© EDP Sciences 1997