Fe_3N和Fe_2N体状化合物合成及其磁特性  

Synthesis and Magnetic Characteristics of Fe 3N and Fe 2N Compounds in Bulk Form

作　　者：连法增[1] 周桂琴[1] 高强[1] 

机构地区：[1]东北大学材料与冶金学院,上海交通大学复合材料研究所

出　　处：《东北大学学报（自然科学版）》1998年第5期475-478,共4页Journal of Northeastern University(Natural Science)

基　　金：冶金部重点课题

摘　　要：纯铁粉在一定比例的氨和氢的气氛中与氮可进行固气反应形成Ｆｅ３Ｎ和Ｆｅ２Ｎ体状化合物．研究了氨气和氢气的比例、温度和时间对反应产物的影响规律，进而确定了形成单一均匀的体状Ｆｅ３Ｎ和Ｆｅ２Ｎ化合物的条件．利用振动样品磁强计、磁天平和热磁分析等手段检测了Ｆｅ３Ｎ和Ｆｅ２Ｎ的磁特性．Ｆｅ３Ｎ化合物的饱和磁化强度（室温）为１３４Ａｍ２／ｋｇ，居里温度为２６０℃；而Ｆｅ２Ｎ化合物饱和磁化强度为２３１Ａｍ２／ｋｇ，属于弱磁性或非磁性，居里温度为２５℃．The pure iron powders were reacted with nitrogen in the certain ratio of NH 3 and H 2. The effect of the ratio of NH 3 and H 2 on the reacted products, and that of temperature and time on the reacted products were investigated. The pure Fe 3N and Fe 2N compounds in bulk form were obtained. The magnetic properties of Fe 3N and Fe 2N compounds were measured by VSM. The saturation magnetization and curie temperature of Fe 3N and Fe 2N compounds are 134Am 2/kg, T c =260℃ and 23.1Am 2/kg, T c =25℃,respectively.

关 键 词：相结构 磁特性 铁氮化合物 

分 类 号：O614.811[理学—无机化学]