Synthesis and Characteristic of a New Niobate: Ba_5NaCr_(0.5)Nb_(9.5)_O_(30)  

作　　者：欧阳世翕 

机构地区：[1]Wuhan University of Technology

出　　处：《Journal of Wuhan University of Technology(Materials Science)》2004年第3期62-64,共3页武汉理工大学学报（材料科学英文版）

基　　金：FundedbytheNationalNaturalScienceFoundationofChina(No .5 0 372 0 6 1 )

摘　　要：A new niobate crystal was synthesized for the first time in BaO-NaO-Cr-2O-3-Nb-2O-3 system by the solid state reaction and the flux method. The new compound was studied by X-ray diffraction, electron probe, X-ray microanalysis, chemical analysis and SEM. The result of X-ray powder diffraction shows that Ba-5NaCr- 0.5Nb- 9.5O- 30 belongs to the tetragonal tungsten bronze structure, with space group P-4 bm(100) and lattice parameters a=b=12.4450(2)A°,c=3.9931(2)A° and Z=1. The X-ray powder diffraction lines of the compound were well indexed.A new niobate crystal was synthesized for the first time in BaO-NaO-Cr-2O-3-Nb-2O-3 system by the solid state reaction and the flux method. The new compound was studied by X-ray diffraction, electron probe, X-ray microanalysis, chemical analysis and SEM. The result of X-ray powder diffraction shows that Ba-5NaCr- 0.5Nb- 9.5O- 30 belongs to the tetragonal tungsten bronze structure, with space group P-4 bm(100) and lattice parameters a=b=12.4450(2)A°,c=3.9931(2)A° and Z=1. The X-ray powder diffraction lines of the compound were well indexed.

关 键 词：NIOBATE CHROMIUM tungsten bronze structure 

分 类 号：TB39[一般工业技术—材料科学与工程]