LnCu3(OH)6Cl3 (Ln = Gd, Tb, Dy): Heavy lanthanides on spin-1/2 kagome magnets
LnCu3(OH)6Cl3 (Ln = Gd, Tb, Dy): Heavy lanthanides on spin-1/2 kagome magnets
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DOI：
10.1088/1674-1056/ac1e20
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发表时间：
2021-11-01
影响因子：
1.7
通讯作者：
Mei, Jia-Wei
中科院分区：
文献类型：
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作者：
Fu, Ying;Huang, Lianglong;Mei, Jia-Wei
自旋为1/2的kagome反铁磁体是研究阻挫磁性的关键原型材料。用水热法成功地合成了三种同构的可果美反铁磁体LnCu（3）（OH）（6）Cl-3（Ln = Gd，Tb，Dy）。LnCu（3）（OH）（6）Cl-3空间群为P（3），具有层状Cu-kagome结构，镧系离子Ln（3+）位于六边形中心。虽然LnCu（3）（OH）（6）Cl-3中的重镧系元素（Ln = Gd、Tb、Dy）与轻镧系元素（Nd、Sm、Eu）类似物相比提供了大的有效磁矩和类似铁磁的自旋关联，但Cu-kagome在约17 K时保持反铁磁有序状态，如YCu 3（OH）（6）Cl-3。
The spin-1/2 kagome antiferromagnets are key prototype materials for studying frustrated magnetism. Three isostructural kagome antiferromagnets LnCu(3)(OH)(6)Cl-3 (Ln = Gd, Tb, Dy) have been successfully synthesized by the hydrothermal method. LnCu(3)(OH)(6)Cl-3 adopts space group P (3) over bar m1 and features the layered Cu-kagome lattice with lanthanide Ln(3+) cations sitting at the center of the hexagons. Although heavy lanthanides (Ln = Gd, Tb, Dy) in LnCu(3)(OH)(6)Cl-3 provide a large effective magnetic moment and ferromagnetic-like spin correlations compared to light-lanthanides (Nd, Sm, Eu) analogues, Cu-kagome holds an antiferromagnetically ordered state at around 17 K like YCu3(OH)(6)Cl-3.