Neutron diffraction study of a metallic kagome lattice, Tb3Ru4Al12

•Neutron diffraction study of a metallic kagome lattice, Tb3Ru4Al12.•Antiferromagnetism with a complex propagation vector behavior.•Spin-glass dynamics in the bulk data due to geometrical frustration.•Possible example for dynamical spin-glass freezing ideas. We present the results of neutron diffrac...

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Bibliographic Details
Published in:Journal of magnetism and magnetic materials 2019-05, Vol.477, p.83-87
Main Authors: Rayaprol, Sudhindra, Hoser, Andreas, Iyer, Kartik K., Upadhyay, Sanjay K., Sampathkumaran, E.V.
Format: Article
Language:English
Subjects:
Antiferromagnetism
Crystals
Dependence
Geometrically frustrated magnetism
Kagome lattice
Kagome lattices
Magnetism
Neutron diffraction
Neutrons
Polycrystals
Spin glasses
Spin-glass
Tb3Ru4Al12
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Summary:•Neutron diffraction study of a metallic kagome lattice, Tb3Ru4Al12.•Antiferromagnetism with a complex propagation vector behavior.•Spin-glass dynamics in the bulk data due to geometrical frustration.•Possible example for dynamical spin-glass freezing ideas. We present the results of neutron diffraction studies on polycrystals of a metallic kagome lattice, Tb3Ru4Al12, reported recently to undergo reentrant magnetism, with the onset of long range antiferromagnetic order below (TN = 22 K) and spin-glass features below about 17 K. The present results reveal long-range antiferromagnetic order of an incommensurate type with the moments oriented along c-axis at all temperatures below TN. There are however notable changes in the T-dependence of propagation vector along b-axis across 17 K. An observation of interest is that there is no decrease of intensity of magnetic Bragg peaks on entrance into the glassy phase (that is, below 17 K). This finding suggests that the magnetism of this compound is an exotic one.
ISSN:0304-8853
1873-4766
DOI:10.1016/j.jmmm.2018.12.104