Doi Yoshihiro, Suzuki Ryo, Hinatsu Yukio, Ohoyama Kenji
Division of Chemistry, Graduate School of Science, Hokkaido University, Sapporo 060-0810, Japan.
J Phys Condens Matter. 2009 Jan 28;21(4):046006. doi: 10.1088/0953-8984/21/4/046006. Epub 2009 Jan 8.
Crystal structures and magnetic properties of quaternary oxides MTeMoO(6) (M = Mn and Zn) were investigated. From the Rietveld analyses for the powder x-ray and neutron diffraction measurements, their detailed structures have been determined. Both compounds have orthorhombic structure with space group P 2(1)2(1)2 and a charge configuration of M(2+)Te(4+)Mo(6+)O(6). ZnTeMoO(6) shows diamagnetic behavior. In this structure, M ions are arranged in a square-planar manner. The temperature dependence of the magnetic susceptibility for MnTeMoO(6) shows a broad peak at ∼33 K, which is due to a two-dimensional characteristic of the magnetic interaction. In addition, this compound shows an antiferromagnetic transition at 20 K. The magnetic structure was determined by the powder neutron diffraction measurement at 3.3 K. The magnetic moments of Mn(2+) ions (4.45 μ(B)) order in a collinear antiferromagnetic arrangement along the b axis.
对四元氧化物MTeMoO₆（M = Mn和Zn）的晶体结构和磁性进行了研究。通过对粉末X射线和中子衍射测量的Rietveld分析，确定了它们的详细结构。两种化合物都具有正交结构，空间群为P 2(1)2(1)2，电荷构型为M(2+)Te(4+)Mo(6+)O(6)。ZnTeMoO₆表现出抗磁性行为。在这种结构中，M离子以平面正方形的方式排列。MnTeMoO₆的磁化率随温度的变化在约33 K处出现一个宽峰，这是由于磁相互作用的二维特性。此外，该化合物在20 K处表现出反铁磁转变。通过在3.3 K下的粉末中子衍射测量确定了磁结构。Mn(2+)离子的磁矩（4.45 μ(B)）沿b轴以共线反铁磁排列有序排列。
