DataVXDigest Journal of Nanomaterials and BiostructuresPaper
journal articleΒ·2023-05-01Open access

Experimental investigation on ferrofluid properties of Cd doped Co-Zn ferrites

Department of Physics, K.Ramakrishnan College of Engineering Trichy-621112, Tamilnadu, India, R. Manimegalai, S. Sendhilnathan, Professor, Department of Physics, University College of Engineering, Pattukkottai Campus, Rajamadam– 614701.Tamilnadu, India, V. Chithambaram, Department of Physics, Karpaga Vinayaga College of Engineering and Technology, Chengalpattu, Tamilnadu, India 603308, M. Kumar, Department of Chemistry, Kings Engineering college, Chennai

Digest Journal of Nanomaterials and BiostructuresΒ· Volume 18Β· Issue 2
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Abstract

The Co-Zn ferrites 𝐢𝐢𝐢𝐢0.5𝑍𝑍𝑍𝑍0.5𝐢𝐢𝐢𝐢π‘₯π‘₯𝐹𝐹𝐹𝐹(2βˆ’π‘₯π‘₯)𝑂𝑂4 (x-0.0, 0.1, 0.2, 0.3, 0.4, and 0.5) were synthesized by CO-precipitation method. The dielectric and structural properties has been investigated by effect of Cd doping in Co-Zn spinel ferrites. Dielectric constants were studied dependence of the frequency and temperature thus revealed that the dielectric dispersion based on the MaxwellWagner method polarizations are agreed with Koop’s conceptualization theory. Further, dielectric properties were studies over a frequency range from 10 kHZ to 30 MHZ. The dielectric constant is varied from 2.4 to 8.4 for real parts and 0.008 to 0.42 for imaginary parts, respectively. The tangent loss also recorded as 0.003 to 0.052 at 1 MHZ due to Co ions concentrations. In high and low frequencies of grain and grain boundary contribution is an important evident for obtained dielectric constant. The obtained values of coercivity (Hc) for these ferrites range between 280.4 Oe to 1380.3 Oe, based on VSM data. By converting Zn2+ and Cd2+ to cobalt magnetic ions it is possible to convert the magnetic properties of cobalt ferrite into a potential individual for numerous technical uses. The dielectric loss at room temperature and at high frequencies is found to be quite negligible. It is also discovered that when Cd is substituted, the dielectric loss tangent reduces.
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OpenAlex topics: Magnetic Properties and Synthesis of Ferrites Β· Magnetic Properties and Applications Β· Magneto-Optical Properties and Applications

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