Complex magnetic structure in Ba5Ru3O12 with isolated Ru3O12-trimer
T. Basu, F. Y. Wei, Q. Zhang, Y. Fang, and X. Ke
TL;DR
This study investigates Ba5Ru3O12, revealing a complex magnetic structure with antiferromagnetic order at 60 K, driven by magnetic frustration within isolated Ru3O12 trimers, without structural distortion or metal-insulator transition.
Contribution
First detailed magnetic and neutron diffraction analysis of Ba5Ru3O12 showing complex magnetic ordering due to intra-trimer magnetic frustration.
Findings
Long-range antiferromagnetic order at 60 K
No structural distortion or metal-insulator transition
Complex magnetic structure caused by competing exchange interactions
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 60 K (TN) without structural distortion and 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.
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