Electromagnetic Studies of Manganese Nickel Ferrites Prepared by Ceramic Technique Using High-Energy Ball Milling Bidyabati Laishram, Mamata Maisnam, Oinam Babynanda Devi Physica Status Solidi A Applications and Materials Science, 2026 In this study, a series of divalent nickel‐substituted manganese ferrites with compositional formula Mn 1− x Ni x Fe 2 O 4 ( x = 0.00, 0.05, 0.15, 0.25, 0.35, 0.45) are synthesized by the ceramic technique using high‐energy ball milling. X‐ray diffraction (XRD) and Fourier transform infrared spectroscopy studies are done for structural and phase analysis. The XRD spectral analysis confirms the single phase with spinel structure. Structural parameters such as crystallite size (32.17–57.46 nm) and lattice constant (8.328–8.377 Å) are calculated from the XRD data. The incorporation of Ni 2+ in the host manganese ferrite is understood from the peak displacing to a higher angle. The room temperature electrical properties such as dielectric constant, dielectric losses, and AC conductivity are measured with the frequency variation. The variation of the electrical parameters shows a dispersion behavior. The dielectric constant increases while the dielectric loss lowers with Ni 2+ content. The AC conductivity shows dispersion with frequency. Using the impedance data, the Nyquist plot determined the conduction mechanisms in the samples. Saturation magnetization values (51.066–65.529 emu g −1 ) were extracted from the hysteresis loop and the magnetic moments of the samples were estimated.
Active Circuit Modeling of Experimental OSCC Bio-Impedance Data Employing Four Terminal Floating Nullor Bidhanshel Singh Athokpam, Vivek Bhatt, Ashish Ranjan, Mamata Maisnam, Sumita Banerjee, Saikat Mukherjee IETE Journal of Research, 2026 A novel design procedure to model experimental bio-impedance data of oral squamous cell carcinoma (OSCC) is introduced using a four-terminal floating nullor (FTFN). The bio-impedance generation using an active block may contribute an additional option to study and analyze the behavior of OSCC by utilizing the single dispersion Cole model (SDCM) without any physical measurement in the future. The model parameters are extracted using the non-linear least squares method in MATLAB with minimum error %. To model the experimental data of the cancer bio-impedance in the range 20 Hz–5 MHz, two resistors, one fractional capacitor, and FTFN are involved to design the Cole model. The proposed design may be a pioneering step in the design of a circuit that depicts practical data for OSCC. The workability of the design is verified with simulation results, and it follows the experimental OSCC data.
Low temperature processing of Li-Mn-Ti ferrite ceramics with V2O5 addition and effects on microstructural and B-H loop properties Journal of Ceramic Processing Research, 2017