摘要
首次采用水热法合成了冰晶石型氟化合物(NH_4)_3FeF_6,其结构和性质经X-射线粉末衍射、扫描电子显微镜和差热-热重分析表征。(NH_4)_3FeF_6属立方晶系,空间群Fm-3m,晶胞参数a=b=c=0.913 0 nm。对磁化率进行了表征。结果表明:随着温度降低,磁有序与晶体特征和孤立的磁单元有关。
The cryolite-type fluoride, （NH4 ）3 FeFr, was first synthesized under mild hydrothermal condition. The structure and properties were characterized by X-ray powder diffraction analysis, scan- ning electron microscopy, thermogravimetric and differential thermal analysis. （NH4 ）3 FeF6 belongs to cubic system, space group Fm-3m with a = b = c = 0. 913 0 nm. The variable temperature magnetic susceptibility was characterized and the result showed that the magnetic ordering was related to the crystallographic features and isolated magnetic unit with the temperature decreasing.
出处
《合成化学》
CAS
CSCD
2017年第4期326-329,334,共5页
Chinese Journal of Synthetic Chemistry
基金
国家自然科学基金资助项目(21201073)
营口理工学院院级科研基金资助项目(QN-L-201403)
关键词
水热合成
氟化物
冰晶石型
合成
磁学性质
hydrothermal
fluoride
cryolite-type
synthesis
magnetic property
