Materials Sciences and Applications, 2019, 10, 733-745 https://www.scirp.org/journal/msa ISSN Online: 2153-1188 ISSN Print: 2153-117X DOI: 10.4236/msa.2019.1012053 Nov. 29, 2019 733 Materials Sciences and Applications Effect of Ti 4+ Doping on Structural, Electrical and Magnetic Properties of Ni 0.4 Cu 0.2 Zn 0.4 Fe 2−x Ti x O 4 Ferrites Sajal Chandra Mazumdar 1* , Farhad Alam 2 , Umma Habiba Tanni 1 , Kamrunnahar Kali 1 , Bablu Chandra Das 3 , Mohammed Nazrul Islam Khan 4 1 Department of Physics, Comilla University, Cumilla, Bangladesh 2 Department of Physical Sciences, School of Engineering and Computer Science, Independent University, Dhaka, Bangladesh 3 Departments of Physics, Bangladesh University of Engineering and Technology, Dhaka, Bangladesh 4 Materials Science Division, Atomic Energy Centre, Dhaka, Bangladesh Abstract Ti 4+ doped Ni 0.4 Cu 0.2 Zn 0.4 Fe 2−x Ti x O 4 (x = 0.0, 0.02, 0.05, 0.07, 0.10) chemical compositions are prepared by conventional solid state reaction technique. The ferrite phase formation has been confirmed from the pattern of XRD. The theoretical density (ρ th ), bulk density (ρ B ), and porosity are calculated from the XRD data and using approximate formulas. Value of ρ th is found to be greater than the value of ρ B indicating the formation of pores inside the bulk specimens. The micro-structural investigation has been done using Field Emission Scanning Electron Microscope and it is found that the average grain size reduces with the increase of Ti content. Saturation magnetization (M s ) also reduces with the increase of Ti content, contrarily remanent magnetiza- tion (M r ) and coercivity (H c ) increases with the concentration of Ti in the composition due to the pinning effect. The real part of the initial permeability is found to be maximum for the x = 0.02 sample which could be due to the homogeneity and high density of the sample. For increasing frequency, the dielectric constant and dielectric loss are observed to decrease. Keywords Ferrite, X-Ray Diffraction, VSM, SEM, Dielectric Properties, Magnetization 1. Introduction Polycrystalline Nickel-Copper-Zinc ferrite is a semi-conducting material that How to cite this paper: Mazumdar, S.C., Alam, F., Tanni, U.H., Kali, K., Das, B.C. and Khan, M.N.I. (2019) Effect of Ti 4+ Doping on Structural, Electrical and Mag- netic Properties of Ni 0.4 Cu 0.2 Zn 0.4 Fe 2−x Ti x O 4 Ferrites. Materials Sciences and Applica- tions, 10, 733-745. https://doi.org/10.4236/msa.2019.1012053 Received: October 24, 2019 Accepted: November 26, 2019 Published: November 29, 2019 Copyright © 2019 by author(s) and Scientific Research Publishing Inc. This work is licensed under the Creative Commons Attribution International License (CC BY 4.0). http://creativecommons.org/licenses/by/4.0/ Open Access