Effect of Iron Concentrations on Some Physical Properties of the System Li0.5FexGa2.5 - xO4

Authors : A TAWFIK, N TASHTOUSH, O M HEMEDA

Pages : 25-30

Doi:10.3906/sag-1203-89

View : 14 | Download : 10

Publication Date : 0000-00-00

Article Type : Research Paper

Abstract :A series of Li0.5 Fex Ga2.5 - x O4 systems were prepared for x = 0, 0.25, 0.5, 0.75 and 1 by the general ceramic method. X-ray diffraction showed that all compositions have single phase Spinel cubic structure. The lattice parameter increased with enhancing iron concentration. The thermoelectric coefficient decreased with increasing x, and the majority carriers are holes. The increase of the jump length of hole increased the electrical conductivity. Jump-length increased with iron concentration and the rate of jumping gave rise to the electrical conductivity. The concentration of Fe3 + ions in Lithium gallate is important, for such structures may have application in communication technology.
Keywords : Ferrite, jump length, jump rate, lattice parameter, hopping conduction