Properties of Mn-doped Cobalt Ferrite Prepared by Layered Precursors Method

A series of Co1-xMnxFe2O4(x can be 0.1,0.2,0.3 or 0.4) ferrite were prepared by layered double hydroxides(LDHS).The structure and magnetic properties were analyzed by means of XRD and vibrating sample magnetometer.The reception properties were tested by self-made sensor in which the calcination samples worked as receiving core.The results show that all samples existed with single-phase spinel structure.Mn-doped materials reduced the coercive force which decreased with increasing Mn content.Material with x=0.1 had a larger saturation magnetization value than that of cobalt ferrite,and the value decreased with increasing Mn content.Co1-xMnxFe2O4 is expected to be used in Barkhausen magneto-elastic sensors as receiving magnetic core.