Electronic structure and magneto-optic Kerr effect in ferromagnetic titanium oxyphosphates Li0.50Co0.25TiO(PO4): An ab-initio study

► Total energy of ferromagnetic state is 0.72 eV less than that of paramagnetic state. ► Total moment is 2.99μB with a major contribution of 2.47μB coming from Co atoms. ► HM character and stability of ferromagnetic Li0.50Co0.25TiO(PO4) is determined. ► Li0.50Co0.25TiO(PO4) semiconductor for minority-spin and semimetallic for majority spin. ► Magneto-optic Kerr effect was calculated.