Complex magnetic structure in Ba5Ru3 O12 with isolated Ru3 O12 trimer

T. Basu; F. Y. Wei; Q. Zhang; Y. Fang; X. Ke

doi:10.1103/PhysRevMaterials.4.114401

Complex magnetic structure in Ba5Ru3 O12 with isolated Ru3 O12 trimer

T. Basu, F. Y. Wei, Q. Zhang, Y. Fang, X. Ke

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Abstract

We report detailed magnetic, transport, heat-capacity, and neutron-diffraction measurements of Ba5Ru3O12, a compound consisting of isolated Ru3O12 trimers. We show that this system develops long-range antiferromagnetic ordering at TN∼60K without structural distortion or metal-insulator type transition, which is in sharp contrast to other barium ruthenate trimer systems such as 9R-BaRuO3 and Ba4Ru3O10. A complex magnetic structure is revealed which is attributable to the magnetic frustration due to competing exchange interactions between Ru ions on different crystallographic sites within the Ru3O12 trimer and different degree of orbital hybridization on different Ru sites. We have also investigated the magnetic structure of Ba4Ru3O10 for comparisons.

Original language	English
Article number	114401
Journal	Physical Review Materials
Volume	4
Issue number	11
DOIs	https://doi.org/10.1103/PhysRevMaterials.4.114401
State	Published - Nov 2 2020

Funding

Work at Michigan State University was supported by the US Department of Energy, Office of Science, Office of Basic Energy Sciences, Materials Sciences and Engineering Division under Award No. DE-SC0019259. A portion of this research used resources at Spallation Neutron Source, a DOE Office of Science User Facility operated by the Oak Ridge National Laboratory.

Funders	Funder number
Office of Basic Energy Sciences
US Department of Energy
Office of Science
Oak Ridge National Laboratory
Division of Materials Sciences and Engineering	DE-SC0019259

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10.1103/PhysRevMaterials.4.114401

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abstract = "We report detailed magnetic, transport, heat-capacity, and neutron-diffraction measurements of Ba5Ru3O12, a compound consisting of isolated Ru3O12 trimers. We show that this system develops long-range antiferromagnetic ordering at TN∼60K without structural distortion or metal-insulator type transition, which is in sharp contrast to other barium ruthenate trimer systems such as 9R-BaRuO3 and Ba4Ru3O10. A complex magnetic structure is revealed which is attributable to the magnetic frustration due to competing exchange interactions between Ru ions on different crystallographic sites within the Ru3O12 trimer and different degree of orbital hybridization on different Ru sites. We have also investigated the magnetic structure of Ba4Ru3O10 for comparisons.",

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Complex magnetic structure in Ba5Ru3 O12 with isolated Ru3 O12 trimer

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