期刊
PHYSICAL REVIEW B
卷 104, 期 18, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevB.104.184407
关键词
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资金
- UC Lab Fees Research Program [LFR-20-653926]
- UC Davis Startup funds
- U.S. Department of Energy, Office of Science, Basic Energy Sciences, Materials Science and Engineering Division
- NSF [DMR-1709382, DMR-2001156]
- National Science Foundation [DMR-1644779]
- State of Florida
Y2Co3 crystallizes in the La2Ni3-type orthorhombic structure with antiferromagnetic order, where moments align primarily along the b axis. Under pressure, the Néel temperature decreases.
We report on a solution-growth based method to synthesise single crystals of Y2Co3 and on its structural and magnetic properties. We find that Y2Co3 crystallizes in the La2Ni3-type orthorhombic structure with space group Cmce (No. 64), with Co forming distorted kagome lattices. Y2Co3 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 Neel 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 Y2Co3 is quite robust, which is surprising for such a Co-rich intermetallic.
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