冰晶石型氟化物(NH_4)_3FeF_6的水热合成及其磁学性质  

Hydrothermal Synthesis and Magnetic Properties of Cryolite-type Fluoride (NH_4)_3FeF_6

作　　者：赫丽杰[1] 张冬[2] 谭广雷[1] 牟涛[1] 刘海燕[1] 杜鹏[1] 

机构地区：[1]营口理工学院化学与材料工程系,辽宁营口115014 [2]吉林大学物理学院新型电池物理与技术教育部重点实验室,吉林长春130012

出　　处：《合成化学》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)

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.

关 键 词：水热合成 氟化物 冰晶石型 合成 磁学性质 

分 类 号：O611.4[理学—无机化学]