Authors : J. M. Khobragade and S. S. Darokar
Page Nos : 327-331
Description :
Abstract:
Substituted YIG with chemical formula Y2-xBixCaFe4.5-yAIyV0.5 O12, (X=0.5, 1.0 and Y=1.0, 1.5) were prepared by standard ceramic technique and characterized by X-ray diffractrometry. Analysis of XRD revealed the presence of single crystalline phase with a space group Ia3d. The temperature variation of molar magnetic susceptibility was studied from room temperature to 800K. Most of the samples were found to be ferromagnetic with high Curie temperature and can be explained well. The variation of DC magnetic susceptibility and dielectric constant with temperature form room temperature to 700K was also studied. For the composition x=1.0 and y=1.0; 1.5 the activation energy of conduction was found low as compared to the composition x=1.0 and y=1.0; 1.5. The dielectric constant was found to increase rapidly with temperature from 420K to 600K.
Keywords: Garnet; magnetic susceptibility; electrical conductivity; dielectric constant.
