Emergence of half metallicity in Cr-doped GaP dilute magnetic semiconductor compound within solubility limit

► This compound is true half metallic ferromagnet for all studied Cr concentrations. ► The half metallicity is preserved up to lowest doping concentration, x = 0.03. ► The HM gap increases with reduction in doping concentration from 0.25 to 0.03. ► p-d hybridization induces ferromagnetism and half metallicity in the compound. ► Double exchange mechanism is responsible for the stabilization of ferromagnetism.