Dielectric and Structural Properties of Lithium Ferrites (original) (raw)

Spectroscopy Letters, 2013

Abstract

ABSTRACT Lithium ferrite has attracted special attention due to its numerous technological applications in microwave devices, magnetic recording, transformer cores, rod antennas, and biomedics. It is also a promising candidate for cathode materials in rechargeable lithium batteries, as well as a low-cost substitute to garnet materials in microwave frequency applications. In the present work, amorphous lithium ferrite powders were prepared via the wet ball milling method. The as-prepared powders were heat treated at temperatures between 400°C and 1200°C and their structure analyzed by X-ray diffraction, Raman spectroscopy, and scanning electron microscopy. Impedance spectroscopy was used, in the frequency range between 100 Hz and 2 MHz and at temperatures between 200 K and 360 K, to characterize the ferrites, in order to optimize the synthesis parameters.

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