Disorder Induced Ferromagnetism in CaRuO3

Abstract

The magnetic ground state of perovskite structure CaRuO3 has been enigmatic for decades. Here we show that paramagnetic CaRuO3 can be made ferromagnetic by very small amounts of partial substitution of Ru by Ti. Magnetic hysteresis loops are observed at 5 K for as little as 2% Ti substitution. Ti is non-magnetic and isovalent with Ru, indicating that the primary effect of the substitution is the disruption of the magnetic ground state of CaRuO3 through disorder. The data suggest that CaRuO3 is poised at a critical point between ferromagnetic and paramagnetic ground states.

References in corpus (3)

• Electronic structure and magnetism in Ru based perovskites
• Ferromagnetic spin fluctuation induced superconductivity in Sr_2RuO_4
• Competitions in layered ruthenates: ferro- vs. antiferromagnetism and triplet vs. singlet pairing

Cited by in corpus (24)

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• Emergence of Competing Stripe Phase near the Mott Transition in Ti-doped Bilayer Calcium Ruthenates
• The anomalous magnetic properties of $CaRu{O}_3$ probed by AC and DC magnetic measurements and by low Ti impurity doping
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• Non-uniform magnetic system driven by non-magnetic ion substitution in CaRu1-xScxO3:Two-component analysis
• Emergence of low temperature glassy dynamics in Ru substituted non magnetic insulator CaHfO3
• Impurity-induced spin density wave in the thermoelectric layered cobaltite [Ca${}_2$CoO${}_3$]${}_{0.62}$[CoO${}_2$]
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