| Numéro |
J. Phys. IV France
Volume 07, Numéro C1, Mars 1997
7th INTERNATIONAL CONFERENCE ON FERRITES
|
|
|---|---|---|
| Page(s) | C1-241 - C1-242 | |
| DOI | https://doi.org/10.1051/jp4:1997192 | |
7th INTERNATIONAL CONFERENCE ON FERRITES
J. Phys. IV France 07 (1997) C1-241-C1-242
DOI: 10.1051/jp4:1997192
Department of Physics, Andhra University, Visakhapatnam 530003, India
© EDP Sciences 1997
J. Phys. IV France 07 (1997) C1-241-C1-242
DOI: 10.1051/jp4:1997192
Densification, Grain Growth and Microstructure of Ni-Zn Ferrites
B. Parvatheeswara Rao, P.S.V. Subba Rao and K.H. RaoDepartment of Physics, Andhra University, Visakhapatnam 530003, India
Abstract
Ni0.65 Zn0.35 Fe2 O4, with high density and fine grain size, is a desirable composition for applications of high frequency switching power supplies. This composition has been studied under different sintering conditions. Observed changes in density, grain size and microstructure in these ferrites have been correlated to the volatilization of zinc from the samples at elevated sintering temperatures. Densification and grain growth are observed to be Arrhenius controlled rate processes with activation energies of 63.9 and 64.4 Kcal/mole respectively.
© EDP Sciences 1997