Magnetic and Transport Study of Single Crystal SrRu$_{1-x}$Cr$_{x}$O$_{3}$ with Increased Curie Temperature

We report results of a structural, magnetic and transport study of single crystal SrRu$_{1-x}$Cr$_{x}$O$_{3}$ (0$\le $ x$<$0.15), i.e., Cr doped SrRuO$_{3}$. Unlike other impurity doping (such as Ca, Mn, Fe), the Cr doping systematically enhances the Curie temperature from Tc=165 K for x=0 to Tc=190 K for x=0.13. In the meantime, the Cr doping also significantly increases the saturation moment from 1.1 for x=0 to as large as 1.5 Bohr magneton/Ru for x$>$0. The system stays itinerant for the entire doping range with resistivity showing the Fisher-Langer behavior at Tc. Magnetic anisotropy and negative magnetoresistance are also observed. All results will be presented and discussed along with comparisons with other related systems.