Preparation and investigation of structural, magnetic and microwave absorption properties of cerium doped barium hexaferrite

Kameli, P; Mosleh, Z; Ranjbar, M; Salamati, H

Preparation and investigation of structural, magnetic and microwave absorption properties of cerium doped barium hexaferrite

Authors

P Kameli

Z Mosleh

M Ranjbar

H Salamati

Abstract

In this study the structure, magnetic and microwave absorption properties of cerium (Ce) doped barium hexaferrite with general formulae BaCexFe12-xO19 (x=0.0, 0.05, 0.1, 0.15, 0.2) have been investigated. These samples have been prepared by sol- gel method. Influence of replacing Fe+3 ion by rare- earth Ce+3 ion on the structural, magnetic and microwave absorption properties have been investigated by X- ray diffraction (XRD), Fourier transform infrared (FT-IR), Vibrating sample magnetometer (VSM) and vector network analyzer (VNA). X-ray diffraction analysis indicated that the samples are of single phase with space group p63/mmc. The magnetic properties of samples indicated that with the Ce doping the saturation magnetization show no regular behavior. Moreover, coercivity (Hc) first decreased and reached to the minimum value for x=0.1 sample and then increased with Ce content increasing. Also, measurement of electromagnetic wave absorption in X and Ku frequency bands indicated that the maximum of reflection loss obtained for x=0.15 sample. Moreover, result indicated that absorption peak shifted toward a lower frequency when thickness was increased.

Keywords

Barium hexaferrite

Ce substitution

magnetic properties

microwave absorption

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