Evaluation of bond covalency and bond valence in Sr-doped perovskite-type compounds
文献类型：期刊论文
| 作者 | Wu ZJ ; Zhang SY |
| 刊名 | helvetica chimica acta
 |
| 出版日期 | 1999 |
| 卷号 | 82期号:3页码:394-399 |
| 关键词 | IONICITIES SUSCEPTIBILITIES OXIDES SOLIDS |
| ISSN号 | 0018-019x |
| 通讯作者 | wu zj |
| 中文摘要 | formulas for decomposing of complex crystals to a sum of binary crystals are described and applied to the study of bond covalency in la1-xsrxfeo3 (0.0 less than or equal to x less than or equal to 0.9) and ca1-xsrxmno3 (0.0 less than or equal to x less than or equal to 0.5). the bond valence is treated by bond-valence sums scheme. the results indicate that, for both compounds, with the increasing doping level, the bond covalency and bond valence show the same trend, namely, larger bond covalency corresponds to higher bond valence. for la1-xsrxfeo3, with the increase of doping level, the bond covalency of la-o, ca-o decreases in the orthorhombic (0.0 less than or equal to x less than or equal to 0.2) and rhombohedral (0.4 less than or equal to x less than or equal to 0.7) systems, then increases slightly for the cubic (0.8 less than or equal to x less than or equal to 0.9) system, but that of fe-o increases for all crystal systems. a sharp decrease in bond covalency was observed where the crystal changes from orthorhombic to rhombohedral, while a smooth trend was seen for the rhombohedral-to-cubic transition. on the other hand, for orthorhombic ca1-xsrxmno3, the bond covalency of ca-o, sr-o, and mn-o (4-coordinate site) decreases with the increasing doping level, that of mn-o (2-coordinate site) increases. |
| 收录类别 | SCI收录期刊论文 |
| 语种 | 英语 |
| WOS记录号 | WOS:000079323700010 |
| 公开日期 | 2010-11-04 |
| 源URL | [http://202.98.16.49/handle/322003/21977]  |
| 专题 | 长春应用化学研究所_长春应用化学研究所知识产出_期刊论文 |
| 推荐引用方式 GB/T 7714 | Wu ZJ,Zhang SY. Evaluation of bond covalency and bond valence in Sr-doped perovskite-type compounds[J]. helvetica chimica acta,1999,82(3):394-399. |
| APA | Wu ZJ,&Zhang SY.(1999).Evaluation of bond covalency and bond valence in Sr-doped perovskite-type compounds.helvetica chimica acta,82(3),394-399. |
| MLA | Wu ZJ,et al."Evaluation of bond covalency and bond valence in Sr-doped perovskite-type compounds".helvetica chimica acta 82.3(1999):394-399. |
入库方式： OAI收割
来源：长春应用化学研究所
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