STUDY ON TEMPERATURE DEPENDENT ELECTRICAL PROPERTIES OF COALT-INC NANOFERRITES
Abstract
- Spinel ferrites have been studied extensively because they play a vital role in the technological applications. In the present work, Cobalt-inc nanoferrites, Co1-xnxFe2O4 (where x = 0.0, 0.1, 0.2 and 0.3) have been prepared by auto-combustion method. Structural and microstructural properties of the samples were characterized by X-ray diffraction (XRD) and Scanning Electron Microscope (SEM) to investigate the single phase nanosized ferrites and morphological features of grain shape, grain size and homogeneity. Variation of the dc electrical resistivities of the Cobalt ferrites with the different concentrations of inc was observed by a simple two probe method. Temperature dependent electrical conductivities of the samples were investigated in the temperature range of 303 K – 773 K. The activation energies (Ea) of the samples were evaluated by using the slopes of lnσ -1000/T relationships.
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Year
- 2018
Author
-
Htet Naing Lwin
Subject
- Physics
Publisher
- Myanmar Academy of Arts and Science (MAAS)