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| Rietveld方法研究Bi_(1-x)Sm_xFeO_3晶体结构 | |
| 引用本文： | 周广东,朱克荣,吴尝,徐加荣.Rietveld方法研究Bi_(1-x)Sm_xFeO_3晶体结构[J].安徽大学学报(自然科学版),2009,33(2). |
| 作者姓名： | 周广东 朱克荣 吴尝 徐加荣 |
| 作者单位： | 1. 安徽大学,物理与材料科学学院 2. 安徽大学,物理与材料科学学院;安徽大学,现代实验技术中心,安徽,合肥,230039 3. 安徽大学,物理与材料科学学院;阜阳师范学院,教务处,安徽,阜阳,236032 |
| 基金项目： | 安徽省教育厅自然科学基金 |
| 摘 要： | 采用溶胶-凝胶法成功制备B i1-xSmxFeO3(BSFOx,x=0.000~0.175)粉体.测得BSFOx(x=0.000~0.175)样品的X射线衍射谱(XRD).XRD结果显示Sm掺杂引起了晶格常数变化并最终导致结构相变.XRD的R ietveld全谱拟合结果表明x=0.000~0.125的BSFOx样品为三角相结构,且随着掺杂含量Sm的增加,晶格常数a、c线性减小;Sm掺杂量增加到x=0.150时,样品转变为正交相结构. |
| 关 键 词： | BiFeO3 X射线衍射 Rietveld拟合 相变 |
Rietveld refinement of Bi_(1-x)Sm_xFeO_3 crystal structure |
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| ZHOU Guang-dong,ZHU Ke-rong,WU Chang,XU Jia-rong.Rietveld refinement of Bi_(1-x)Sm_xFeO_3 crystal structure[J].Journal of Anhui University(Natural Sciences),2009,33(2). | |
| Authors: | ZHOU Guang-dong ZHU Ke-rong WU Chang XU Jia-rong |
| Institution: | 1.School of Physics and Material Science;Anhui University;Hefei 230039;China;2.Modern Experiment Technology Center;3.Teaching Affairs Department;Fuyang Teachers College;Fuyang 236032;China |
| Abstract: | Bi1-xSmxFeO3(BSFOx,x=0.000~0.175) powders were prepared by sol-gol process.X-ray diffraction(XRD) patterns of the BSFOx(x=0.000~0.175) samples showed that the Sm doping causes lattice constant change as well as the structure transition.Rietveld refinement of the XRD patterns demonstrated that crystal structure of the BSFOx samples with x=0.000~0.125 was trigonal structure and lattice constant a,c decreased linearly with the increase of Sm concentration.When the Sm concentration increased to 0.150,BSFOx stru... |
| Keywords: | BiFeO3 |
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