• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文学位 >Studies on new inorganic solid-state borates and oxoanion fluorides.
【24h】

Studies on new inorganic solid-state borates and oxoanion fluorides.

机译：新型无机固态硼酸盐和含氧阴离子氟化物的研究。

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

High-temperature solution growth and structural characterization of CeSc3(BO3)4 (CSB) are described. This material is the first example of a stoichiometric scandium borate that exhibits both a wide transparency range and the trigonal, noncentrosymmetric structure of the mineral huntite. Interest in the borate huntites stems from their potential as optical frequency converters and self-frequency doubling lasers.; The crystal structure of NaLiB4O7 and results of its equilibrium interactions with Li2B4O7 are described. Crystal-growth experiments corroborate the peritectic behavior of the compound as well as the existence of intermediate compositions, which may provide a mechanism for tuning linear and nonlinear properties in this noncentrosymmetric crystal.; From an investigation of the Plasma Display Panel (PDP) phosphor Eu:(Y,Gd)BO 3 and development of new EU3+-containing phosphors, a simple model has been formulated for correlating the excitation maxima of BO3 groups with the average cation electronegativity per formula unit. Correlation between site symmetry and the nature of the EU3+ emission, and between structural coordination and the efficiency of energy transfer from the host to the EU3+-activator are made from analysis of excitation and emission spectra.; YMgB5O10 was synthesized during a search for new ternary phases in the system Y2O3-B2O 3-MgO; it provides a rare example of a structure containing a ten-coordinate Y atom. Y4BO7F was discovered during an investigation of the ternary system Y2O3-B2O3-YF 3. Structure analysis and a subsequent synthesis effort led to the development of a new family of borate fluorides Ln4BO7F (Ln = Y, Dy, Ho, Er, Tm, and Yb.); The new materials Li2Ca6(MO4)F 2 (M = Si, Ge) have been synthesized and structurally characterized, and a convenient synthesis method has been developed for the compound Sr 4Ge2O7F2. Such materials are of interest for the production of highly anisotropic crystal fields and the production of unusual luminescence characteristics.
机译：描述了CeSc 3 （BO 3 ） 4 （CSB）的高温溶液生长和结构表征。这种材料是化学计量的硼酸scan的第一个实例，它既具有宽的透明度范围，又具有矿物三重矿物的三角非中心对称结构。对硼酸镁钠铁矿的兴趣源于其作为光变频器和自倍频激光器的潜力。 NaLiB 4 O 7 的晶体结构及其与Li 2 B 4 O 的平衡相互作用的结果> 7 。晶体生长实验证实了化合物的包晶行为以及中间成分的存在，这可能为调节这种非中心对称晶体的线性和非线性性质提供了一种机制。通过对等离子显示面板（PDP）荧光粉Eu：（Y，Gd）BO 3 的研究以及新的含EU 3 + 荧光粉的开发，具有一个简单的模型配制了BO 3 基团的激发最大值与每个公式单位的平均阳离子电负性相关的公式。建立了位置对称性与EU 3 + 发射性质之间的相关性，以及结构协调与能量从主体向EU 3 + 激活剂的传递效率之间的相关性。通过分析激发和发射光谱。在系统Y 2 O 3 -B中寻找新的三元相期间，合成了YMgB 5 O 10 2 O 3 -MgO；它提供了一个罕见的包含十个原子的Y原子的结构的例子。 Y 4 BO 7 F在三元体系Y 2 O 3 -B 2 O 3 -YF 3 。结构分析和随后的合成工作导致开发了新的硼酸氟化物Ln 4 BO 7 F族（Ln = Y，Dy，Ho，Er，Tm，和Yb。）；新材料Li 2 Ca 6 （MO 4 ）F 2 （M = Si，Ge）已经过合成了Sr 4 Ge 2 O 7 F 2 子>。这样的材料对于产生高度各向异性的晶体场和产生异常的发光特性是令人感兴趣的。

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