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A complete solid solution series between the t2g^4 perovskite ferromagnetSrRuO3 and the diamagnetic t2g^6 perovskite LaRhO3 has been prepared. Theevolution with composition x in (SrRuO3)(1-x)(LaRhO3)(x) of the crystalstructure and electrical and magnetic properties has been studied and isreported here. As x increases, the octahedral tilt angle gradually increases,along with the pseudocubic lattice parameter and unit cell volume. Electricalresistivity measurements reveal a compositionally driven metal to insulatortransition between x = 0.1 and 0.2. Ferromagnetic ordering gives over to glassymagnetism for x > 0.3 and no magnetic ordering is found above 2 K for x > 0.5.M_sat and Theta_CW decrease with increasing x and remain constant after x =0.5. The magnetism appears poised between localized and itinerant behavior, andbecomes more localized with increasing x as evidenced by the evolution of theRhodes-Wohlfarth ratio. mu_eff per Ru is equal to the quenched spin-only Svalue across the entire solid solution. Comparisons with Sr(1-x)Ca(x)RuO3reinforce the important role of structural distortions in determining magneticground state. It is suggested that electrical transport and magnetic propertiesare not strongly coupled in this system.

Electrical and magnetic properties of the complete solid solution series between SrRuO3 and LaRhO3: Filling t2g versus tilting