...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Dalton transactions: An international journal of inorganic chemistry >Crystal structures and color properties of new complex perovskite oxynitrides AMg(0.2)Ta(0.8)O(2.6)N(0.4) (A = Sr, Ba)
【24h】

Crystal structures and color properties of new complex perovskite oxynitrides AMg(0.2)Ta(0.8)O(2.6)N(0.4) (A = Sr, Ba)

机译：新型复合钙钛矿型氧氮化物AMg（0.2）Ta（0.8）O（2.6）N（0.4）的晶体结构和颜色特性（A = Sr，Ba）

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

New complex perovskite oxynitrides AMg(0.2)Ta(0.8)O(2.6)N(0.4) (A = Sr, Ba) were synthesized by reacting A(5)Ta(4)O(15) with MgCl2 in flowing NH3. The formation of AMg(0.2)Ta(0.8)O(2.6)N(0.4) can be described as the cooperative insertion of Mg2+ + 2N(3-) and the release of 2O(2-) from the layered oxide, A(5)Ta(4)O(15). Rietveld refinement of the neutron and synchrotron X-ray diffraction patterns indicated that BaMg0.2Ta0.8O2.6N0.4 is simple cubic (Pm (3) over barm) and SrMg0.2Ta0.8O2.6N0.4 is body-centered tetragonal (I4/mcm), isostructural with BaM0.2Ta0.8O2.8N0.2 and SrM0.2Ta0.8O2.8N0.2 (M = Li, Na), respectively. The nitrogen in SrMg0.2Ta0.8O2.6N0.4 is partially ordered favoring the c-axial site over the ab-plane of the tetragonal cell, which is a different O/N order pattern from that of SrLi0.2Ta0.8O2.8N0.2 and SrNa0.2Ta0.8O2.8N0.2. The group of simple and complex perovskites, ATaO(2)N, ALi(0.2)Ta(0.8)O(2.8)N(0.2), ANa(0.2)Ta(0.8)O(2.8)N(0.2), and AMg(0.2)Ta(0.8)O(2.6)N(0.4) (A = Sr, Ba) covers the band gap range, 1.9-2.4 eV, and the color ranges from yellow to dark brown.
机译：通过使A（5）Ta（4）O（15）与MgCl2在流动的NH3中反应来合成新的复杂钙钛矿型氧氮化物AMg（0.2）Ta（0.8）O（2.6）N（0.4）（A = Sr，Ba）。 AMg（0.2）Ta（0.8）O（2.6）N（0.4）的形成可以描述为Mg2 + + 2N（3-）的协同插入以及层状氧化物A（2 5）Ta（4）O（15）。中子和同步加速器X射线衍射图的Rietveld精炼表明，BaMg0.2Ta0.8O2.6N0.4是简单立方晶（Pm（3）over barm），而SrMg0.2Ta0.8O2.6N0.4是体心四边形（ I4 / mcm），分别用BaM0.2Ta0.8O2.8N0.2和SrM0.2Ta0.8O2.8N0.2（M = Li，Na）进行同构。 SrMg0.2Ta0.8O2.6N0.4中的氮有序排列，有利于方形电池ab平面上的c轴位，这是与SrLi0.2Ta0.8O2.8N0的O / N有序模式.2和SrNa0.2Ta0.8O2.8N0.2。简单和复杂钙钛矿，ATaO（2）N，ALi（0.2）Ta（0.8）O（2.8）N（0.2），ANa（0.2）Ta（0.8）O（2.8）N（0.2）和AMg的组（0.2）Ta（0.8）O（2.6）N（0.4）（A = Sr，Ba）覆盖了1.9-2.4 eV的带隙范围，颜色范围从黄色到深棕色。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号