| 不同元素掺杂对复合晶体Sr14(Cu1-yMy)24O41(M=Zn,NiCo)结构的影响 |
| |
| 引用本文： | 李洋,王俊,邹化民,林颖,胡妮,汪丽莉,石兢. 不同元素掺杂对复合晶体Sr14(Cu1-yMy)24O41(M=Zn,NiCo)结构的影响[J]. 电子显微学报, 2008, 27(2): 87-91 |
| |
| 作者姓名： | 李洋 王俊 邹化民 林颖 胡妮 汪丽莉 石兢 |
| |
| 作者单位： | 武汉大学,物理科学与技术学院,湖北武汉430072;电子显微镜中心,湖北武汉430072;武汉大学,物理科学与技术学院,湖北武汉430072 |
| |
| 摘 要： | 用常规的固相反应法制备了Zn2 ,Ni2 ,Co3 掺杂的3组复合晶体Sr14(Cu1-yMy)24O41(M=Zn,Ni,Co)系列样品.选区电子衍射研究表明,这些样品的自旋链亚结构的衍射点都出现了在a*和b*方向上扩展成衍射线的现象,而仅由自旋梯子亚结构产生的衍射斑点仍保持明锐.随着掺入离子的电子总自旋的增大,自旋链亚结构的衍射斑点扩展成衍射线的现象加重.掺入Co3 离子的复合晶体Sr14(Cu1-yMy)24O41中对应于自旋链亚结构的衍射斑点已完全扩展成垂直于c*的漫散射条纹.掺Co样品[001]带轴高分辨像显示,两套亚系统沿[001]方向的投影在口和b方向上的周期非常完整.这表明,Sr14(Cu1-yMy)24O41的自旋链亚结构仅在沿着c发生了初始相位无序.而掺入离子的电子总自旋的不同使这种初始相位无序的程度不同.
|
| 关 键 词： | 复合晶体 自旋梯子 电子衍射 |
| 文章编号： | 1000-6281(2008)02-0087-05 |
| 修稿时间： | 2007-05-14 |
Effects of different element doping on the structure of composite crystal Sr_(14)(Cu_(1-y)M_y)_(24)O_(41)(M=Zn,Ni,Co) |
| |
| LI Yang,WANG Jun,ZOU Hua-min,LIN Ying,HU Ni,WANG Li-li,SHI Jing. Effects of different element doping on the structure of composite crystal Sr_(14)(Cu_(1-y)M_y)_(24)O_(41)(M=Zn,Ni,Co)[J]. Journal of Chinese Electron Microscopy Society, 2008, 27(2): 87-91 |
| |
| Authors: | LI Yang WANG Jun ZOU Hua-min LIN Ying HU Ni WANG Li-li SHI Jing |
| |
| Affiliation: | LI Yang1,2,WANG Jun1,ZOU Hua-min1,LIN Ying1,HU Ni1,WANG Li-li1,SHI Jing1(1.School of Physical Science , Technology,Wuhan University,2.Center for Electron Microscopy,Wuhan Hubei 430072,China) |
| |
| Abstract: | The Zn2+,Ni2+ and Co3+ doped Sr_14(Cu_1-yM_y)_24O_41(M=Zn,Ni,Co)composite crystals were synthesized by standard solid state reaction method.Selected area electron diffraction experiments showed that the diffraction spots corresponding to the spin-chain substructure were extended to diffuse scattering fringes along a* and b* directions,while the diffraction spots produced merely from the ladder substructure were still very sharp.Such a phenomenon that diffraction spots were extended to diffuse fringes became... |
| |
| Keywords: | composite crystal spin ladder electron diffraction |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
|
