LnCu3(OH)6Cl3(Ln=Gd,Tb,Dy):Heavy lanthanides on spin-1/2 kagome magnets

The spin-1/2 kagome antiferromagnets are key prototype materials for studying frustrated magnetism.Three isostruc-tural kagome antiferromagnets LnCu3(OH)6Cl3(Ln=Gd,Tb,Dy)have been successfully synthesized by the hydrother-mal method.LnCu3(OH)6Cl3 adopts space group P(3)m1 and features the layered Cu-kagome lattice with lanthanide Ln3+cations sitting at the center of the hexagons.Although heavy lanthanides(Ln=Gd,Tb,Dy)in LnCu3(OH)6Cl3 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)6Cl3.