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O. M. Hemeda

Researcher at Tanta University

Publications -  130
Citations -  1870

O. M. Hemeda is an academic researcher from Tanta University. The author has contributed to research in topics: Ferrite (magnet) & Dielectric. The author has an hindex of 19, co-authored 109 publications receiving 1324 citations. Previous affiliations of O. M. Hemeda include Taif University.

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Spectral and transport phenomena in Ni ferrite-substituted Gd2O3

TL;DR: In this paper, a series of samples of the mixed ferrite NiGd x Fe 2− x O 4 ( x = 0, 0.1, ǫ 0.5 and 0.7) were prepared by the usual ceramic technique.
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Structural, electrical and transport phenomena of Co ferrite substituted by Cd

TL;DR: A series of samples of Co1−xCdxFe2O4 were prepared by the usual ceramic technique and sintered at 1473 K for 6 hours as discussed by the authors. And the X-ray analysis showed the existence of single phase spinel structure with the increase of lattice parameter and density with increasing Cd contents whereas the porosity decreases.
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Effect of γ-rays irradiation on Mn–Ni ferrites: Structure, magnetic properties and positron annihilation studies

TL;DR: In this article, a representative group of the investigated samples were irradiated by γ-rays of 60Co source with a dose of 310kGy and compared with that of the pristine samples to estimate changes in the structure.
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Effect of hopping rate and jump length of hopping electrons on the conductivity and dielectric properties of Co–Cd ferrite

TL;DR: The cobalt cadmium ferrite has an n-type conductivity as discussed by the authors, which is inversely proportional to hopping length, but is directly proportional to the hopping rate of electrons.