CaSi氧化物对Sr_(1-x)La_xFe_(11.6-x)Co_xO_(19)六角铁氧体晶粒形貌及磁性能影响研究  

Influence of CaSi Oxide on Microstructure and Magnetic Properties of Sr_(1-x)La_xFe_(11.6-x)Co_xO_(19) Hexaferrite

作　　者：陈中艳[1] 冯则坤[1] 詹振华 吴捷 

机构地区：[1]华中科技大学光学与电子信息学院,武汉430074 [2]广东江粉磁材股份有限公司,江门529000

出　　处：《无机材料学报》2014年第1期81-84,共4页Journal of Inorganic Materials

基　　金：广东省教育部产学研合作项目(20110905)~~

摘　　要：基于传统陶瓷工艺制备Sr1-x Lax Fe11.6-x Cox O19样品,重点研究CaSi氧化物对Sr1-x Lax Fe11.6-x Cox O19预烧料晶粒形貌及磁性能的影响。采用XRD、SEM和VSM分析样品的结构特征、微观形貌及磁特性。微观形貌分析的结果表明CaSi氧化物可以有效调控预烧料的晶粒形貌,通过优化CaSi氧化物的含量,能够得到理想的微观形貌及高的Mr/Ms。当掺杂量x=0.2时,加入0.15wt%CaCO3和0.2wt%SiO2的添加剂,饱和磁化强度(σs)和矫顽力(HcJ)比未加入CaSi氧化物时分别提高4.76%和6.2%,样品的Mr/Ms在掺杂范围内均有所提高。Based on the standard ceramic preparation process, the effects of CaSi oxide on the microstructure and magnetic properties of Sr1-xLaxFe11.6-xCoxO19 were studied. The microstructural, morphology and magnetic properties of the samples were characterized by XRD, SEM and VSM. The SEM results show that the morphology of calcined samples are effective controled by CaSi oxide. So the ideal microstructure and enhanced Mr/Ms can be obtained by optimizing the amount of CaSi oxide. With x=0.2, 0.15wt% CaCO3 and 0.2wt% SiO2 were added to the Sr1-xLaxFe11.6-x CoxO19 and the measured σs and HcJ were enhanced by 4.76% and 6.2%, respectively, when compared with non-doped sample. Meanwhile, the Mr/Ms was improved as well in the above mentioned doping range.

关 键 词：CaSi氧化物 六角铁氧体 微观形貌 磁性能 

分 类 号：TQ174[化学工程—陶瓷工业]