Synthesis, Structure, and Magnetic Properties of Two Mercury Selenite Antiferromagnets HgM(SeO3)(2)(H2O)(2) (M = Co, Ni)
Synthesis, Structure, and Magnetic Properties of Two Mercury Selenite Antiferromagnets HgM(SeO3)(2)(H2O)(2) (M = Co, Ni)
复制标题
两种汞亚硒酸盐反铁磁体 HgM(SeO3)(2)(H2O)(2) (M = Co, Ni) 的合成、结构和磁性
DOI：
10.1021/acs.inorgchem.9b00008
复制
发表时间：
2019
影响因子：
4.6
通讯作者：
He Zhangzhen
中科院分区：
文献类型：
--
作者：
Zhao Zhiying;Zhang Wanwan;He Zhangzhen
采用常规水热法合成了两种亚硒酸汞化合物HgM(SeO3)2(H2O)2(M = Co, Ni)。两种化合物均以具有aC2/c空间群的单斜结构结晶，等效的Co2+或Ni2+离子呈现堆叠三角晶格。磁性测量表明这两种同构化合物之间存在不同的磁性，其中HgCo(SeO3)2(H2O)2在TN= 7.6 K以下经历倾斜的反铁磁顺序，而HgNi(SeO3)2(H2O)2在TN= 9.0 K以下表现出共线反铁磁顺序。当施加磁场时，在Bc1∼1T和Bc2∼处观察到两个连续的磁转变HgCo(SeO3)2(H2O)2 中的 3.6 T 为 3.6 T，而 HgNi(SeO3)2(H2O)2 中仅在 3.1 T 附近检测到一个场诱导跃迁。
Two mercury selenite compounds HgM(SeO3)2(H2O)2(M = Co, Ni) are synthesized using a conventional hydrothermal method. Both compounds crystallize in the monoclinic structure with aC2/cspace group, and equivalent Co2+or Ni2+ions exhibit a stacked triangular lattice. Magnetic measurements suggest different magnetic properties between these two isostructural compounds, in which HgCo(SeO3)2(H2O)2undergoes a canted antiferromagnetic order belowTN= 7.6 K, while HgNi(SeO3)2(H2O)2exhibits a collinear antiferromagnetic order belowTN= 9.0 K. When applying a magnetic field, two successive magnetic transitions are observed atBc1∼ 1 T andBc2∼ 3.6 T in HgCo(SeO3)2(H2O)2, whereas only one field-induced transition is detected around 3.1 T in HgNi(SeO3)2(H2O)2.