Effect of ce substitution on structural and electrical properties of W-type strontium hexaferrite nanomaterials

A series of w-type hexaferrites having composition sr 3ce xfe 16-xo 27 (x = 0.00,0.02,0.04,0.06) has been prepared by the chemical co-precipitation method. the effect of cerium substitution at fe site on the structural and electrical properties has been investigated. the xrd analysis confirms the formation of single w-type hexaferrite phase and various parameters such as lattice constants (a & c),cell volume (v),crystallite size (d),x-ray density (dx),bulk density (db) and porosity (p) were calculated from xrd data. the crystallite size is found in range of 15-23nm and this size is small enough to obtained suitable signal-to-noise ratio in high density recording media. the room temperature resistivity of the materials increases from 6.5×10 8 to 6.57×10 9 ohm cm with the increase in cerium content. the increase in resistivity reveals that the materials can be used for applications in microwave devices.