Preparation, XRD and Raman spectroscopic studies on new compounds RE2Hf2O7 (RE = Dy, Ho, Er, Tm, Lu, Y): pyrochlores or defect-fluorite?

Mandal BP; Garg N; Sharma SM; Tyagi AK

首页> 外文期刊>International Journal of Quantum Chemistry >Preparation, XRD and Raman spectroscopic studies on new compounds RE2Hf2O7 (RE = Dy, Ho, Er, Tm, Lu, Y): pyrochlores or defect-fluorite?

【24h】

Preparation, XRD and Raman spectroscopic studies on new compounds RE2Hf2O7 (RE = Dy, Ho, Er, Tm, Lu, Y): pyrochlores or defect-fluorite?

机译：新化合物RE2Hf2O7（RE = Dy，Ho，Er，Tm，Lu，Y）的制备，XRD和拉曼光谱研究：烧绿石还是萤石缺陷？

获取原文

获取原文并翻译 | 示例

掌桥外文数据库（机构版） >>

开具论文收录证明 >>

文献代查 >>

页面导航

摘要
著录项
相似文献
相关主题

摘要

A series of compositions with the general formula RE2Hf2O7 (RE = Dy, Ho, Er, Tm, Y and Lu) was prepared by a standard solid-state route and characterized by powder X-ray diffraction (XRD) and Raman spectroscopy. As per theoretical modeling reported in literature, some of these materials were predicted to exist in pyrochlore lattice. However, a careful X-ray diffraction, Raman spectroscopic and synchrotron radiation-XRD study revealed that under the experimental conditions used in the present investigation, out of all the RE2Hf2O7 samples only Dy2Hf2O7 has got a tendency to form a pyrochlore structure. All the other (Ho, Er, Tm, Lu, Y) hafnates crystallize in a defect-fluorite structure. In order to further ascertain these inferences, a few more RE2Hf2O7 samples (La, Nd, Sm) i.e., with larger RE3+ ions were also prepared and the results were compared. (C) 2006 Elsevier Inc. All rights reserved.

机译：通过标准固态路线制备了一系列通式为RE2Hf2O7的组合物（RE = Dy，Ho，Er，Tm，Y和Lu），并通过粉末X射线衍射（XRD）和拉曼光谱进行了表征。根据文献报道的理论模型，这些材料中的一些被预测存在于烧绿石晶格中。但是，仔细的X射线衍射，拉曼光谱和同步辐射XRD研究表明，在本研究使用的实验条件下，在所有RE2Hf2O7样品中，只有Dy2Hf2O7倾向于形成烧绿石结构。所有其他（Ho，Er，Tm，Lu，Y）盐酸盐均以缺陷萤石结构结晶。为了进一步确定这些推论，还制备了更多的RE2Hf2O7样品（La，Nd，Sm），即具有更大的RE3 +离子，并对结果进行了比较。（C）2006 Elsevier Inc.保留所有权利。

著录项

来源
《International Journal of Quantum Chemistry》 |2006年第7期|共5页
作者
Mandal BP; Garg N; Sharma SM; Tyagi AK;
展开▼
作者单位

展开▼
收录信息
原文格式 PDF
正文语种 eng
中图分类物理化学（理论化学）、化学物理学;
关键词
ceramics; X-ray diffraction (XRD); Raman spectroscopy; OXIDES;

机译：陶瓷;X射线衍射（XRD）;拉曼光谱;氧化物;

相似文献

外文文献
中文文献
专利

1. Ab Initio Study on The Influence of Spin State upon Bonding and Interaction in Fe-COBondCovalenciesinR2BaCuO5(R=Sm,Gd,Dy,Ho,Y,Er,Tm,Yb,Lu) [J] . 高等学校化学研究：英文版 . 1999,第002期
2. Preparation, XRD and Raman spectroscopic studies on new compounds RE2Hf2O7 (RE = Dy, Ho, Er, Tm, Lu, Y): pyrochlores or defect-fluorite? [J] . Mandal BP, Garg N, Sharma SM, International Journal of Quantum Chemistry . 2006,第7期

机译：新化合物RE2Hf2O7（RE = Dy，Ho，Er，Tm，Lu，Y）的制备，XRD和拉曼光谱研究：烧绿石还是萤石缺陷？
3. Preparation and structural study from neutron diffraction data of RCoO3 (R = Pr, Tb, Dy, Ho, Er, Tm, Yb, Lu) perovskites [J] . Alonso JA, Martinez-Lope MJ, de la Calle C, Journal of Materials Chemistry: An Interdisciplinary Journal dealing with Synthesis, Structures, Properties and Applications of Materials, Particulary Those Associated with Advanced Technology . 2006,第16期

机译：钙钛矿型RCoO3（R = Pr，Tb，Dy，Ho，Er，Tm，Yb，Lu）的中子衍射数据的制备及结构研究
4. Atomistic study of rare-earth compounds R2Fe17 (R=Y, Ce, Pr, Nd, Sm, Gd, Tb, Dy, Ho, Er, Tm, Lu) and Nd2Fe17Nx [J] . Hao SQ., Chen NX., Shen J. Modelling and simulation in materials science and engineering . 2002,第4期

机译：稀土化合物R2Fe17（R = Y，Ce，Pr，Nd，Sm，Gd，Tb，Dy，Ho，Er，Tm，Lu）和Nd2Fe17Nx的原子研究
5. Structural and magnetic phase transitions of kagome-like compounds REBaCo_4O_7 (RE = Dy, Ho, Er, Tm, Yb, Lu) [C] . M. Markina, A.N. Vasiliev, N. Nakayama Joint European Magnetic Symposia . 2010

机译：kagome样式的结构和磁性相变relaco_4o_7（重新= dy，ho，er，tm，Yb，Lu）
6. Experimental and thermodynamic investigation of RE-Mg-Zn (RE=Sc, Y, La, Ce, Pr, Nd, Pm, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb and Lu) systems [D] . Zhu, Zhijun. 2015

机译：RE-Mg-Zn（RE = Sc，Y，La，Ce，Pr，Nd，Pm，Sm，Eu，Gd，Tb，Dy，Ho，Er，Tm，Yb和Lu）系统的实验和热力学研究
7. Study on water vapor corrosion resistance of rare earth monosilicates RE2SiO5 (RE = Lu Yb Tm Er Ho Dy Y and Sc) from first-principles calculations [O] . Jing Han, Yanfei Wang, Rongjun Liu, 2018

机译：通过第一性原理研究稀土单硅酸盐RE2SiO5（RE = LuYbTmErHoDyY和Sc）的耐水蒸气腐蚀性能
8. THE PREPARATION AND THERMAL DECOMPOSITION OF THE CARBONATES OF Tb, Dy, Ho, Er, Tm, Yb, Lu, Y, AND Sc [O] . Head, E.L., Holley, C.E. Jr. 1963

机译：Tb，Dy，Ho，Er，Tm，Yb，Lu，Y和sc的碳酸盐的制备和热分解

Preparation, XRD and Raman spectroscopic studies on new compounds RE2Hf2O7 (RE = Dy, Ho, Er, Tm, Lu, Y): pyrochlores or defect-fluorite?

摘要

著录项

相似文献

相关主题

期刊订阅