Journal
MODERN PHYSICS LETTERS B
Volume 21, Issue 21, Pages 1425-1430Publisher
WORLD SCIENTIFIC PUBL CO PTE LTD
DOI: 10.1142/S0217984907013651
Keywords
co-precipitation; X-ray diffraction; scanning electron micrograph; initial permeability
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Active powder of Cu-substituted Mn-Zn ferrite was synthesized by soft chemical approach called co-precipitation method. The initial permeability, density, grain size, Curie temperature and dc resistivity were studied. X-ray diffraction (XRD) method confirmed the sample to be a single-phase spinel and of nano-structure (similar to 65 nm). Further, scanning electron micrograph (SEM) also confirmed nano-phase and the uniformity of the particles. The initial permeability values did not exhibit much variation with temperature, except near Curie temperature where it falls sharply. The initial permeability was found to increase with the increase in sintering temperature. This is attributed to the increase in the grain size.
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