Disorder Induced Ferromagnetism in CaRuO3

T. He; R. J. Cava

doi:10.1103/PhysRevB.63.172403

Disorder Induced Ferromagnetism in CaRuO3

Condensed Matter 2009-11-07 v1

Authors: T. He , R. J. Cava

View on arXiv ↗ PDF ↗ DOI ↗

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.

Keywords

perovskite magnetism frustrated magnetism

Cite

@article{arxiv.cond-mat/0102364,
  title  = {Disorder Induced Ferromagnetism in CaRuO3},
  author = {T. He and R. J. Cava},
  journal= {arXiv preprint arXiv:cond-mat/0102364},
  year   = {2009}
}

Related papers

View all related →

Materials Science · Physics

Possible ferrimagnetism and ferroelectricity of half-substituted rare-earth titanate: a first-principles study on Y$_{0.5}$La$_{0.5}$TiO$_3$