Dynamic Ferrimagnetic Order in a Highly Distorted Double Perovskite Y2CoRuO6

Zheng Deng, Maria Retuerto, Sizhan Liu, Mark Croft, Peter W. Stephens, Stuart Calder, Wenmin Li, Bijuan Chen, Changqing Jin, Zhiwei Hu, Man Rong Li, Hong Ji Lin, Ting Shan Chan, Chien Te Chen, Sun Woo Kim, Martha Greenblatt

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6 Scopus citations

Abstract

Y2CoRuO6 was synthesized as a B-site ordered double perovskite with distorted monoclinic P21/n symmetry and an average tilting of the CoO6 and RuO6 octahedra of ψ = 19.7°. DC magnetization measurements show a ferrimagnetic transition at around 82 K. Although long-range ferrimagntic order is supported by neutron diffraction studies, aging phenomena in time-dependent isothermal magnetization, frequency dependence of AC susceptibility, and a smeared peak in the specific heat together reveal spin glass-like dynamics. The magnetic subtleties resemble chaotic behavior as previously observed in some ferro- or ferrimagnetic materials that exhibit spin glass-like dynamics. It is argued that the magnetic dynamics in Y2CoRuO6 mainly stem from competition between antiferromagnetic Co-O-(Ru)-O-Co/Ru-O-(Co)-O-Ru and antiferromagnetic Co-O-Ru interactions, besides a degree of Co:Ru antisite disorder. Herein, the B-site ordered Y2CoRuO6 offers a model to explore the intriguing dynamics in correlated 3d-4d transition metal double perovskites.

Original languageEnglish (US)
Pages (from-to)7047-7054
Number of pages8
JournalChemistry of Materials
Volume30
Issue number20
DOIs
StatePublished - Oct 23 2018

All Science Journal Classification (ASJC) codes

  • Materials Chemistry
  • Chemical Engineering(all)
  • Chemistry(all)

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