Author(s)

Sajal Chandra Mazumdar^1*, Farhad Alam², Umma Habiba Tanni¹, Kamrunnahar Kali¹, Bablu Chandra Das³, Mohammed Nazrul Islam Khan⁴

¹Department of Physics, Comilla University, Cumilla, Bangladesh.
²Department of Physical Sciences, School of Engineering and Computer Science, Independent University, Dhaka, Bangladesh.
³Departments of Physics, Bangladesh University of Engineering and Technology, Dhaka, Bangladesh.
⁴Materials Science Division, Atomic Energy Centre, Dhaka, Bangladesh.

Ti⁴⁺ doped Ni_0.4Cu_0.2Zn_0.4Fe_2-xTi_xO₄ (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 magnetization (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.

Ferrite, X-Ray Diffraction, VSM, SEM, Dielectric Properties, Magnetization

Mazumdar, S. , Alam, F. , Tanni, U. , Kali, K. , Das, B. and Khan, M. (2019) Effect of Ti⁴⁺ Doping on Structural, Electrical and Magnetic Properties of Ni_0.4Cu_0.2Zn_0.4Fe_2-xTi_xO₄ Ferrites. Materials Sciences and Applications, 10, 733-745. doi: 10.4236/msa.2019.1012053.