Morphological, Infrared and Structural Studies for Nano Cobalt Ferrite Doped with Lanthanum | ||||
| Delta Journal of Science | ||||
| Article 11, Volume 38, Issue 1, June 2017, Page 94-114 PDF (1.61 MB) | ||||
| Document Type: Research and Reference | ||||
| DOI: 10.21608/djs.2017.139434 | ||||
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| Authors | ||||
| B. I. Salem1; O.M HEMEDA1; S.F. MANSOUR2 | ||||
| 1Department of Physics, Fac. of Science, Tanta University, Tanta, Egypt | ||||
| 2Department of Physics, Fac. of Science, Zagazig University, Zagazig, Egypt | ||||
| Abstract | ||||
| A series of LaxCoFe2-xO4 prepared by flash method, where x=0.05, 0.1, 0.15, 0.2, 0.25 and 0.3. The powder samples were characterized by X-ray diffraction, FTIR and TEM (transmission Electron Microscope). The x-ray analysis shows that the samples have a single phase cubic spinel structure. The lattice constant was founded to be nearly constant up to x=0.25 and then increase as lanthanum content increase. The FTIR spectra of the sample were recorded from 200-4000 cm-1, which analyzed the molecular structure of the samples and the formation of spinel structure in bulk and nano modes. The HRTEM photographs clearly show the presence of cubic nanoparticle with average diameter of 16nm for flash samples. The high resolution (HRTEM) indicates the presence of lattice planes which confirm the crystalline nature of the sample. The effect of La3+ ions on dielectric properties are presented in this paper. | ||||
| Keywords | ||||
| Nano ferrites; X-ray; IR and HRTEM | ||||
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