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| 掺杂对锰氧化物La_(0.67)Ca_(0.33)Mn_(0.9)A_(0.1)O_3(A:Cr,Co,Fe,Cu)结构的影响 | |
| 引用本文： | 王艳文,张星,郝艳玲,路庆凤. 掺杂对锰氧化物La_(0.67)Ca_(0.33)Mn_(0.9)A_(0.1)O_3(A:Cr,Co,Fe,Cu)结构的影响[J]. 河南师范大学学报(自然科学版), 2012, 40(2): 73-76 |
| 作者姓名： | 王艳文 张星 郝艳玲 路庆凤 |
| 作者单位： | 1. 新乡医学院生命科学学院,河南新乡,453003 2. 兴义民族师范学院物理系,贵州兴义,562400 3. 河南师范大学物理信息工程学院,河南新乡,453007 |
| 基金项目： | 贵州省教育厅自然科学研究基金，黔西南州科技局科技计划 |
| 摘 要： | 采用固相反应法制备了La0.67Ca0.33Mn0.9A0.1O3(A:Cr,CoFe,Cu)系列样品;利用X射线衍射(XRD)和扫描电镜(SEM)对系列样品进行了表征,结果表明:样品单相性很好;以元素Cr,Fe,Co替代时,样品呈现较均匀的颗粒,而元素Cu替代时样品呈大片状结构,空洞半径按替代元素Cr,Co,Fe,Cu的顺序逐渐变大,说明替代元素与Mn离子的半径之差Δ是影响样品空洞半径及缺陷的重要因素. |
| 关 键 词： | 掺杂 X射线衍射 扫描电镜 |
Influence of doping on the structure of La0.67Ca0.33Mn0.9A0.1O3 (A:Cr,Co,Fe,Cu) |
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| WANG Yan-wen , ZHANG Xing , HAO Yan-ling , LU Qing-feng. Influence of doping on the structure of La0.67Ca0.33Mn0.9A0.1O3 (A:Cr,Co,Fe,Cu)[J]. Journal of Henan Normal University(Natural Science), 2012, 40(2): 73-76 | |
| Authors: | WANG Yan-wen ZHANG Xing HAO Yan-ling LU Qing-feng |
| Affiliation: | 1.Department of Life Sciences & Technology,Xinxiang Medical University,Xinxiang 453003,China; 2.Department of Physics,Xingyi Normal University for Nationalities,Xingyi 562400,China 3.College of Physics and Engineering,Henan Normal University,Xinxing 453007,China) |
| Abstract: | Samples of La0.67Sr0.33Mn0.9Fe0.1O3 series are prepared by the standard solid-state reaction and featured with X-ray diffraction(XRD) and Scanning electricity mirror(SEM).Results show that all samples are of good single phases and samples doped by Cr,Fe and Co take the form of uniform grains,whereas samples doped by Cu of big flakes,and that cavity radius gradually increases in the order of doping elements Cr,Co,Fe and Cu,indicating that the radius difference between the doping element and Mn ion is the important influential factor of cavity radius and defects. |
| Keywords: | doping X-ray diffraction scanning electronic microscope |
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