TY - SER AU - Karpagavalil, S. AU - Vethanathan, S. John Kennady AU - Perumal, S. TI - Effect of Nickel Doping onStructural, Optical, Electrochemical and Magnetic Properties of Hausmannite (Mn3o4) Nanoparticles KW - Solvothermal Method KW - X-Ray Diffraction KW - Electrochemical Studies ER -