多晶Ca_(1+x)B_6陶瓷制备及其弱磁性能分析  

An Analysis on the Weak Ferromagnetic of Polycrystalline Ca_(1+x)B_6 Ceramics

作　　者：曹明贺[1] 蒋军[2] 刘韩星[1] 袁俊[2] 

机构地区：[1]武汉理工大学材料复合新技术国家实验室,武汉430070 [2]清华大学材料科学与工程系,北京100084

出　　处：《武汉理工大学学报》2006年第11期38-40,共3页Journal of Wuhan University of Technology

基　　金：武汉理工大学校基金(xgj2004190)

摘　　要：分别采用常规烧结技术和热压烧结技术,根据固相氧化还原反应原理在不同温度制度下制备了多晶Ca1+xB6(x<0.04)陶瓷材料。物相分析发现,在烧结温度较低时,样品中含有较多CaB2O4相,随烧结温度升高,CaB2O4相逐渐减少;样品的铁磁性能分析表明,所制备多晶Ca1+xB6陶瓷在室温下均呈铁磁态,这种现象与报道的CaB6单晶铁磁性行为存在差异。In this paper, the weak ferromagnetic properties of polycrystalline Ca1 ＋ xB6 ceramics sintered at different temperature in Ar atmosphere were reported. The results indicated that the Ca2O4 phase appeard at low temperature, and the content of the phase decreased with the increasing of the temperature. All the compositions showed ferromagnetic nature at room temperature when x（0.04 which was different from that of single crystal Ca1 ＋ xB6.

关 键 词：多晶Ca1+xB6 铁磁性 陶瓷 

分 类 号：TQ174[化学工程—陶瓷工业]