Magnetotransport properties ofSrRuO3epitaxial thin films on (100)LaAlO3: Presence of localized magnetic moments

We report temperature and magnetic field dependences of the longitudinal and transverse magnetoresistances of high-quality epitaxial ${\mathrm{SrRuO}}_3$ thin films. We also report Hall effect measurements in the paramagnetic and ferromagnetic states. The magnetic field dependence of the longitudinal magnetoresistivity shows a simple scaling ∼${\mathit{H}}^2$/(T-${\mathit{T}}_{\mathit{c}}$ ${)}^2$ far above the ferromagnetic transition temperature ${\mathit{T}}_{\mathit{c}}$. This observation supports a presence of localized magnetic moments above ${\mathit{T}}_{\mathit{c}}$. © 1996 The American Physical Society.