Magnetic structure of triangular lattice compound Tb2Ni0.90Si2.94
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Date
2021-10-15
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Elsevier
Abstract
AlB2-type ternary intermetallic compound Tb2Ni0.90Si2.94 (space group P6/mmm,hP3, No. 191) was reported to exhibit spin freezing behaviour of the ferromagnetic clusters present in the system below Tf=9.9 K, along with the presence of spatially limited antiferromagnetic phase. In this work, on the basis of variable temperature zero-field neutron diffraction measurements, we have shown that the antiferromagnetic phase transition occurs for the compound below TN~13 K. Neutron diffraction study indicates ab-plane non-collinear sine-modulated antiferromagnetic ordering of the system with wave vectors of k1=[±1/6,±1/6,0] and k2=[±1/3,±1/3,0] down to 1.7 K. The weak and diffuse nature of the magnetic Bragg peaks along with limited coherence length further confirm the short-range nature of the antiferromagnetic phase in this compound. © 2021 Elsevier B.V.
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Keywords
Magnetic properties, Neutron diffraction, Rare earths, Intermetallic compounds, Antiferromagnetism, Phase transformations
Citation
Pakhira, S., Morozkin, A. V., Avdeev, M., & Mazumdar, C. (2021). Magnetic structure of triangular lattice compound Tb2Ni0.90Si2.94. Journal of Magnetism and Magnetic Materials, 536, 168083. doi:10.1016/j.jmmm.2021.168083