Effect of nickel doping on the structural, optical, electrochemical and magnetic properties of hausmannite (Mn₃O₄) nanoparticles
by S. Karpagavalli; S. John Kennady Vethanathan; S. Perumal
International Journal of Nanoparticles (IJNP), Vol. 11, No. 4, 2019

Abstract: Nickel doped manganese tetroxide (Mn₃O₄) nanoparticles are synthesised by microwave assisted solvothermal route. The structural characterisation of as prepared Ni doped Mn₃O₄ nanoparticles are determined by the aid of powder X-ray diffraction (XRD). The functional groups present in the material are determined by Fourier transform infrared (FTIR) analysis. The transmission electron microscope (TEM) images showed the topographical, compositional and crystalline information. Energy-dispersive X-ray (EDX) analysis determines the abundance of specific elements. The optical properties are analysed by ultraviolet-visible (UV-Vis) spectroscopy. The perceived red shift in the UV-Vis absorption spectra confirmed the stimulated electron-phonon interaction in nickel doped Mn₃O₄ nanoparticles. The electrochemical characteristics of nickel doped Mn₃O₄ nanoparticles are examined by cyclic voltammogram (CV). The vibrating sample magnetometer (VSM) studies confirmed the ferromagnetic behaviour of Ni doped Mn₃O₄ nanoparticles at room temperature.

Online publication date: Mon, 23-Dec-2019

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