| Numéro |
J. Phys. IV France
Volume 07, Numéro C1, Mars 1997
7th INTERNATIONAL CONFERENCE ON FERRITES
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|---|---|---|
| Page(s) | C1-245 - C1-246 | |
| DOI | https://doi.org/10.1051/jp4:1997194 | |
7th INTERNATIONAL CONFERENCE ON FERRITES
J. Phys. IV France 07 (1997) C1-245-C1-246
DOI: 10.1051/jp4:1997194
1 Physics Department, Faculty of Science, Ain Shams University, Cairo, Egypt
2 Physics and Mathematical Engineering Department, Faculty ofEngineering, Menoufia University, Shebin El-Kom, Egypt
© EDP Sciences 1997
J. Phys. IV France 07 (1997) C1-245-C1-246
DOI: 10.1051/jp4:1997194
Rare Earth Doping Effect on the Electrical Properties of Cu-ZnFerrites
A.A. Sattar1 and K.M. El-Shokrofy21 Physics Department, Faculty of Science, Ain Shams University, Cairo, Egypt
2 Physics and Mathematical Engineering Department, Faculty ofEngineering, Menoufia University, Shebin El-Kom, Egypt
Abstract
Samples of the chemical formulaCu0.5Zn0.5Fe2-xRxO4where R is a rare earth ion (R=La,Nd,Sm,Gd and Dy) and x=0 and x= 0.1 have beeninvestigated The X-ray diffraction analysis showed a single spinel phase. Thelattice constant was found to be nearly independent of the type of R ions. Thetemperature dependence of the electrical resistivity indicated a change in theactivation energy on passing the Neel temperature. The thermo electric powerwas found to be nearly independent of temperature but depends on the type of Rions. Our results are well explained using the hopping conduction mechanism inthese ferrites.
© EDP Sciences 1997