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Robust antiferromagnetism in Y\\(_2\\)Co\\(_3\\)
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Robust antiferromagnetism in Y\\(_2\\)Co\\(_3\\)
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Paper
Robust antiferromagnetism in Y\\(_2\\)Co\\(_3\\)
2022
Overview
We report on a solution-growth based method to synthesise single crystals of Y\\(_2\\)Co\\(_3\\) and on its structural and magnetic properties. We find that Y\\(_2\\)Co\\(_3\\) crystallizes in the La2Ni3-type orthorhombic structure with space group Cmce (No. 64), with Co forming distorted kagome lattices. Y\\(_2\\)Co\\(_3\\) orders antiferromagnetically below \\(T_N\\) = 252 K. Magnetization measurements reveal that the moments are primarily aligned along the b axis with evidence for some canting. Band-structure calculations indicate that ferromagnetic and antiferromagnetic orders are nearly degenerate, at odds with experimental results. Magnetization measurements under pressure up to 1 GPa reveal that the N/'eel temperature decreases with the slope of -1.69 K/GPa. We observe a field-induced spin-flop transition in the magnetization measurements at 1.5 K and 21 T with magnetic field along the b direction. The magnetization is not saturated up to 35 T, indicating that the antiferromagnetic ordering in Y\\(_2\\)Co\\(_3\\) is quite robust, which is surprising for such a Co-rich intermetallic.
Publisher
Cornell University Library, arXiv.org
