Subsolidus phase relations in the Y2O3-Eu2O3-SnO2 ternary system and their luminescent properties

Abstract

摘要 采用固态反应法及改良固态反应法合成了一系列Y2O3-Eu2O3-SnO2体系中的试样，利用X射线粉末衍射法测定了Y2O3-Eu2O3-SnO2三元系固相线下的相关系.结果表明，Y2O3-Eu2O3二元系 关键词: Y2O3-Eu2O3-SnO2三元系 / 烧绿石型结构 / 激发光谱 / 发射光谱 Abstract Subsolidus phase relations in the ternary system Y2O3-Eu2O3-SnO2 have been investigated by means of X-ray powder diffraction. The samples are prepared by solid-state chemical reaction. The (Y1-xEux)2Sn2O7 and (Y1-xEux)2O3 binary systems form complete solid solutions with pyrochlore-type and cubic structures, respectively. The characteristic photoluminescence peaks observed from (Y1-xEux)2Sn2O７ and (Y1-xEux)2O3 compounds correspond to Eu3+ intra-4fn shell transitions. The difference between the emission and excitation spectra of (Y1-xEux)2Sn2O7 and (Y1-xEux)2O3 can be explained by considering the surroundings of crystallographic site occupied by Eu3+. Y2O3-Eu2O3-SnO2 ternary s Keywords: ystem / pyrochlore / excitation spectrum / emission spectrum 作者及机构信息 孙宝娟, 刘泉林, 梁敬魁, 纪丽娜, 张继业, 刘延辉, 李静波, 饶光辉 基金项目: 国家自然科学基金(批准号：50672007)资助的课题. Authors and contacts 参考文献 施引文献