Structure and X-ray reference diffraction patterns of (Ba6-xSrx)R2Co4O15 (x=1, 2) (R = lanthanides)
文献类型：期刊论文
| 作者 | Wong-Ng, W ; Liu, G ; Yan, YG ; Kaduk, JA |
| 刊名 | POWDER DIFFRACTION
 |
| 出版日期 | 2013 |
| 卷号 | 28期号:3页码:212 |
| 关键词 | X-ray reference diffraction patterns (Ba6-xSrx)R2Co4O15 (x=1 crystal structure 2) (R = La Nd Sm Eu and Gd) |
| ISSN号 | 0885-7156 |
| 通讯作者 | Wong-Ng, W (reprint author), NIST, Mat Measurement Sci Div, Gaithersburg, MD 20899 USA. |
| 中文摘要 | The structure and X-ray patterns of two series of barium lanthanide cobaltates, namely, Ba4Sr2R2Co4O15 (R = La, Nd, Sm, Eu, Gd, and Dy), and Ba5SrR2Co4O15 (R = La, Nd, Sm, Eu, and Gd) have been determined. These compounds crystallize in the space group P6(3)mc; the unit-cell parameters of Ba4Sr2R2Co4O15 (R from La to Dy) decrease from a = 11.6128(2) angstrom to 11. 5266(9) angstrom, c = 6.869 03(11) to 6. 7630(5) angstrom, and V = 802.23(3)angstrom(3) to 778.17(15) angstrom(3), respectively. In the Ba5SrR2Co4O15 series (R = La to Gd), the unit-cell parameters decrease from a = 11.735 44(14) angstrom to 11.619 79(12) angstrom, c = 6.942 89 (14) angstrom to 6.836 52(8) angstrom, and V = 828.08(3) angstrom(3) to 799.40(2) angstrom(3). In the general structure of (Ba6-xSrx) R2Co4O15, there are four Co ions per formula unit occupying one CoO6 octahedral and three CoO4 tetrahedral units. Through corner-sharing of these polyhedra, a larger Co4O15 unit is formed. Sr2+ ions adopt both octahedral and 8-fold coordination environment. R3+ ions adopt 8-fold coordination (mixed site with Sr), while the larger Ba2+ ions assume both 10- and 11-fold coordination environments. The samples were found to be insulators. X-ray diffraction patterns of these samples have been determined and submitted to the Powder Diffraction File (PDF). (C) 2013 International Centre for Diffraction Data. |
| 语种 | 英语 |
| 公开日期 | 2014-01-17 |
| 源URL | [http://ir.iphy.ac.cn/handle/311004/57490]  |
| 专题 | 物理研究所_物理所公开发表论文_物理所公开发表论文_期刊论文 |
| 推荐引用方式 GB/T 7714 | Wong-Ng, W,Liu, G,Yan, YG,et al. Structure and X-ray reference diffraction patterns of (Ba6-xSrx)R2Co4O15 (x=1, 2) (R = lanthanides)[J]. POWDER DIFFRACTION,2013,28(3):212. |
| APA | Wong-Ng, W,Liu, G,Yan, YG,&Kaduk, JA.(2013).Structure and X-ray reference diffraction patterns of (Ba6-xSrx)R2Co4O15 (x=1, 2) (R = lanthanides).POWDER DIFFRACTION,28(3),212. |
| MLA | Wong-Ng, W,et al."Structure and X-ray reference diffraction patterns of (Ba6-xSrx)R2Co4O15 (x=1, 2) (R = lanthanides)".POWDER DIFFRACTION 28.3(2013):212. |
入库方式： OAI收割
来源：物理研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。