中子衍射
结晶学
旋转
磁性结构
化学
基面
离子
磁矩
自旋(空气动力学)
衍射
粘结长度
分子几何学
凝聚态物理
晶体结构
材料科学
物理
分子
磁场
磁化
光学
有机化学
热力学
量子力学
作者
W. Kunnmann,S. La Placa,L. M. Corliss,J. M. Hastings,E. Banks
标识
DOI:10.1016/0022-3697(68)90187-x
摘要
Cr2WO6, Cr2TeO6 and Fe2TeO6 belong to chemical space group P42/mnm (Z = 2) and are antiferromagnetically ordered at 4.2°K. Neutron diffraction results for the ordered state show that the magnetic ions have collinear spin arrangements in a magnetic cell identical with the chemical cell, with 3 d-ion moments of 2.14 μB, 2.45 μB and 4.19 μB, respectively, for the three compounds. Although Cr2TeO6 and Cr2WO6 have nearly identical Cr-O-Cr bond angles and bond distances, the former is magnetically body-centered while the latter is anti-body-centered. In both cases the Cr spins lie in the basal plane. Fe2TeO6 is structurally equivalent to Cr2TeO6 except that the spin is directed along the c-axis. V2WO6 has been synthesized and found to have the trirutile structure. Preliminary neutron diffraction results indicate that it is magnetically ordered at 4.2°K with the Cr2WO6 structure.
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