Magnetic disordered in Ti doped ErCo2 alloys: Griffiths-like behavior

► The inverse susceptibility of Ti doped ErCo2 samples exhibits a non-linear temperature dependence. ► Some cobalt moments are localized in paramagnetic regime due to disorder induced by Ti. ► We observe Griffiths-like behavior for Ti doped samples. ► The Landau coefficients, a1 and a3, in the free energy are determined from high-field magnetization.