Subsolidus phase relations and crystal structures of R-Ca-Cu-O (R = Nd, Sm, Gd, Tm) systems
文献类型：期刊论文
| 作者 | C. Q. Han ; G. B. Song ; X. L. Chen ; J. K. Liang ; G. H. Rao |
| 刊名 | Journal of Solid State Chemistry
 |
| 出版日期 | 2003 |
| 卷号 | 173期号:1页码:164-171 |
| 关键词 | R2O3-CaO-CuO (R = Nd Ca10R4Cu24O41 (R = Nd Ca2+xR2-xCu5O10 (R = Nd Gd Sm phase relations Sm Sm Tm) structure Gd Gd) structure Tm) systems ternary-system approximately 950-degrees-c high-pressure superconductivity diagram air er compatibilities property oxide |
| ISSN号 | 0022-4596 |
| 中文摘要 | The subsolidus phase relations of R2O3-CaO-CuO ternary systems (R = Nd, Sm, Gd, Tm) have been investigated by X-ray powder diffraction. All samples were synthesized at about 950degrees in air. There exists a ternary compound Ca14-xRxCu24O41 (x = 4 for R = Nd, Gd and x = 5 for R = Sm) and a ternary solid solution Ca2+xR2-xCu5O10 (R = Nd, Sm, Gd, Tm) with a wide composition range Deltax of about 0.6. The compound Ca14-xRxCu24O41 possesses a layered orthorhombic structure and is isostructural to Sr14-xCaxCu24O41. The lattice parameters a and c of the compound are basically independent of the ionic radius of R, while the lattice parameter b and unit-cell volume V decrease substantially with the decrease of the ionic radii of R. The Ca2+xR2-xCu5O10 solid solution is isostructural to Ca2+xY2-xCu5O10, the structure of which is based on an orthorhombic "NaCuO2-type" subcell containing infinite one-dimensional chains of edge-shared square planar cuprate groups crosslinked by the layered cations Ca and R that locate in the inter-chain tunnels. (C) 2002 Elsevier Science (USA). All rights reserved. |
| 原文出处 | |
| 公开日期 | 2012-04-14 |
| 源URL | [http://ir.imr.ac.cn/handle/321006/35842]  |
| 专题 | 金属研究所_中国科学院金属研究所 |
| 推荐引用方式 GB/T 7714 | C. Q. Han,G. B. Song,X. L. Chen,et al. Subsolidus phase relations and crystal structures of R-Ca-Cu-O (R = Nd, Sm, Gd, Tm) systems[J]. Journal of Solid State Chemistry,2003,173(1):164-171. |
| APA | C. Q. Han,G. B. Song,X. L. Chen,J. K. Liang,&G. H. Rao.(2003).Subsolidus phase relations and crystal structures of R-Ca-Cu-O (R = Nd, Sm, Gd, Tm) systems.Journal of Solid State Chemistry,173(1),164-171. |
| MLA | C. Q. Han,et al."Subsolidus phase relations and crystal structures of R-Ca-Cu-O (R = Nd, Sm, Gd, Tm) systems".Journal of Solid State Chemistry 173.1(2003):164-171. |
入库方式： OAI收割
来源：金属研究所
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