WO_3-Co_3O_4复合氧化物的制备及磁学性质  

Preparation and magnetic property of WO_3-Co_3O_4 composite oxides

作　　者：隋春红[1] 龚剑[2] 

机构地区：[1]吉林医药学院药学院,吉林吉林132013 [2]东北师范大学化学学院,吉林长春130021

出　　处：《吉林医药学院学报》2016年第1期19-22,共4页Journal of Jilin Medical University

基　　金：吉林省科技厅基金项目(20150101131JC);吉林省教育厅基金(2013354)

摘　　要：目的采用不同的无机原料制备复合型氧化物,考察晶系与磁性的关系。方法选取PVA/α2-K8P2W17Co O61和PVA/KCl、(NH4)6H2W12O40、Co(NO3)2为原料经过高压静电纺丝和高温焙烧方法,制备WO3-Co3O4复合氧化物。结果从扫描电镜照片(SEM)可以看出,杂多酸盐为母体经过高温焙烧后得到了纳米片形貌的复合氧化物,X-射线粉末衍射(XRD)测试结果为六方晶相WO3-Co3O4的复合氧化物,磁学性质为铁磁性耦合;选取普通无机化合物为原料获得纤维形貌的复合氧化物,其晶态为六方和三斜晶相共混的WO3-Co3O4的复合氧化物,表现为反铁磁性耦耦合。结论不同晶系的WO3对Co3O4的磁性有显著的影响。Objective To study the relations between crystal and magnetism during the preparation of composite ox-ides by different inorganic compounds. Methods The PVA/α2-K8 P2 W17 CoO61 and PVA/KCl,（ NH4 ） 6 H2 W12 O40 ,Co （ NO3 ） 2 were chosen as raw materials to prepare the composite oxides by using the electrospinning and calcinations technique. Results Scanning electron microscope （ SEM ） photographs and X-ray diffraction （ XRD ） indicated that nanoplates and hexagonal system tungsten oxide （ WO3 ）-cobaltosic oxide （ Co3 O4 ） composite oxides were ob-tained. The magnetic properties appeared the ferromagnetic couples. While,chosing inorganic compounds as raw mate-rials,the nanofibers morphology and hexagonal and triclinic system WO3-Co3O4 were obtained. The magnetic properties appeared the antiferromagnetic couples. Conclusion Different crystal WO3 has significant effect on magnetism of Co3 O4 .

关 键 词：四氧化三钴 三氧化钨 六方晶系 三斜晶系 磁性 

分 类 号：O631[理学—高分子化学]