Robust antiferromagnetism in Y2Co3
Robust antiferromagnetism in Y2Co3
复制标题
Y2Co3 具有强大的反铁磁性
DOI：
10.1103/physrevb.104.184407
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发表时间：
2021
影响因子：
3.7
通讯作者：
Taufour, Valentin
中科院分区：
文献类型：
--
作者：
Shi, Yunshu;Parker, David S.;Choi, Eun Sang;Devlin, Kasey P.;Yin, Li;Zhao, Jingtai;Klavins, Peter;Kauzlarich, Susan M.;Taufour, Valentin
我们报道了一种基于溶液生长的方法来合成单晶，并对其结构和磁性进行了研究。我们发现，Co的晶体结构为类正交晶系，空间群为No.64，Co形成畸变的kagome晶格。磁化测量显示，这些力矩主要是沿轴沿着排列的，并有一些倾斜的证据。能带结构计算表明，铁磁和反铁磁序几乎是简并的，与实验结果不符。磁化强度的测量表明，在1GPa以下的压力下，Néel温度随K/GPa的斜率而降低。在1.5 K和21 T下的磁化强度测量中，我们观察到了磁场沿着方向的场诱导自旋翻转转变。磁化强度在35 T以下不饱和，表明反铁磁有序性非常强，这对于富Co金属间化合物来说是令人惊讶的。
We report on a solution-growth based method to synthesise single crystals ofand on its structural and magnetic properties. We find thatcrystallizes in the-type orthorhombic structure with space group(No. 64), with Co forming distorted kagome lattices.orders antiferromagnetically belowK. Magnetization measurements reveal that the moments are primarily aligned along theaxis 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 Néel temperature decreases with the slope ofK/GPa. We observe a field-induced spin-flop transition in the magnetization measurements at 1.5 K and 21 T with magnetic field along thedirection. The magnetization is not saturated up to 35 T, indicating that the antiferromagnetic ordering inis quite robust, which is surprising for such a Co-rich intermetallic.