络合物对制备纯相BiFeO_3纳米晶的影响  

Effect of Chelator on the Preparation of Pure Phase BiFeO_3 Nanocrystals

作　　者：杨国海[1] 包刚[2] 杨建平[2] 李兴鳌[3] 

机构地区：[1]襄樊学院物理与电子工程学院,襄樊441053 [2]南京邮电大学理学院,南京210046 [3]南京邮电大学材料科学与工程学院,南京210046

出　　处：《材料导报》2012年第14期55-58,共4页Materials Reports

基　　金：国家自科基金(51172110);江苏省自科基金(BK2010525)

摘　　要：采用溶胶-凝胶法用聚乙烯醇(PVA)和酒石酸两种不同络合物制备了BiFeO3纳米晶。通过优化两种络合物的制备工艺,在400℃的低温下以酒石酸作络合物时,得到了纯相的BiFeO3纳米晶。采用X射线衍射仪(XRD)和扫描电子显微镜(SEM)测量分析了样品结构和形貌,研究了溶胶-凝胶制备工艺和不同络合物对BiFeO3纳米晶的形成及晶体结构的影响。BiFeO3 nanocrystals were prepared by sol-gel method with PVA and tartaric acid used as chelator. The pure phase of BiFeO3 were synthesized by optimizing the preparation technology of sol gel method at low temperature of 400℃ with tartaric acid used as chelator. Sample＇s structure and morphology were analyzed by X-ray diffraction （XRD） and scanning electron microscopy （SEM） measurements, the influence of sintering technique and two chelators on formation and crystal structure of the BiFeO3 nanocrystals were studied.

关 键 词：BiFeO3纳米晶 溶胶-凝胶 络合物 

分 类 号：TQ138.1[化学工程—无机化工] O482.5[理学—固体物理]