Special Issue Description


Authors : A. D. Deshpande, A. S. Kakdeb, K. G. Rewatkarb and V. M. Nanotic

Page Nos : 32-36

Description :
Abstract: Nano-size M-type hexaferrite Ca(Zr-Co)xFe12-2xO19 (x=0, 0.5) powders are synthesized by the ‘Microwave induced sol-gel combustion route’. Lattice parameters a=5.807-5.825Å, c=21.582-22.124Å are calculated using X-ray diffraction data confirms the hexagonal crystal structure. The Reitveld refinement of the X-ray diffraction data is done which confirms the formation of hexagonal crystal structure. TEM micrograph of the sample shows that the particles have an average particle size of 50nm. Magnetic properties of the sample saturation magnetization (Ms), the remnant magnetization (Mr) and the coercivity (Hc) are measured using vibrating sample magnetometer (VSM).The values found to decrease with increase in the degree of substitution of cations which can be attributed to different site preferences of substituted cations in parent hexaferrite. Keywords: Calcium hexaferrites; Microwave induced; B-H curve; Coercivity heard

Date of Online: 30 Special Issue-2, Feb. 2015