Disorder-induced ferromagnetism in CaRuo3

T. He, R. J. Cava

Research output: Contribution to journalArticle

93 Scopus citations

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 nonmagnetic 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.

Original languageEnglish (US)
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume63
Issue number17
DOIs
StatePublished - Jan 1 2001

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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