论文标题
CD掺杂Ceirin的磁性结构$ _5 $
Magnetic structure of Cd-doped CeIrIn$_5$
论文作者
论文摘要
我们报告名义上10％CD掺杂的Ceirin $ _5 $，CEIR的磁性结构（以$ _ {0.9} $ cd $ _ {0.1} $ _ 5 $，由弹性中子散射确定。仅在订购波矢量$ q_ {af} =（1/2,1/2,1/2）$上观察到磁强度，与晶格相称。在1.8 k时，交错的矩为0.47（3）$μ_b$。发现磁矩沿着晶体学$ c $轴对齐。磁化率数据进一步证实了这一点，这表明$ c $轴是简单的磁轴。确定的磁性结构与紧密相关的化合物Cerhin $ _5 $的不固定的抗铁磁有序明显不同，其中磁矩在四方基平面内对抗磁磁体排列。
We report the magnetic structure of nominally 10% Cd-doped CeIrIn$_5$, CeIr(In$_{0.9}$Cd$_{0.1}$)$_5$, determined by elastic neutron scattering. Magnetic intensity was observed only at the ordering wave vector $Q_{AF} = (1/2,1/2,1/2)$, commensurate with the crystal lattice. A staggered moment of 0.47(3)$μ_B$ at 1.8 K resides on the Ce ion. The magnetic moments are found to be aligned along the crystallographic $c$ axis. This is further confirmed by magnetic susceptibility data, which suggest the $c$ axis to be the easy magnetic axis. The determined magnetic structure is strikingly different from the incommensurate antiferromagnetic ordering of the closely related compound CeRhIn$_5$, in which the magnetic moments are antiferromagnetically aligned within the tetragonal basal plane.
