摘要
首次报告Ｇｄ２Ｏ３Ｅｕ纳米荧光体的晶体结构和相变．由Ｘ射线衍射检测结果，Ｇｄ２Ｏ３Ｅｕ纳米荧光体存在体心立方和单斜多型结构．和体材料的相变温度１２５０℃相比，Ｇｄ２Ｏ３Ｅｕ纳米晶由立方到单斜相变温度升高到１３００和１３５０℃之间．这一结果也从Ｇｄ２Ｏ３Ｅｕ纳米荧光体的荧光光谱变化得到证实．
In this paper, the crystal structures and phase transition on Gd 2O 3∶Eu nanophosphors have investigated for the first time. The crystal structures of Gd 2O 3∶Eu nanophosphors by X ray diffraction show a body cubic and monoclinic. As observed in XRD analysis, the transition temperature from cubic to monoclinic phase in Gd 2O 3∶Eu nanocrystal increased to 1300～1350℃ from 1250℃ for bulk material. The result is also confirmed by the changing of the Eu 3+ emission spectra of Gd 2O 3∶Eu nanophosphors.
出处
《发光学报》
EI
CAS
CSCD
北大核心
1998年第3期224-226,共3页
Chinese Journal of Luminescence
基金
国家科委"863"
中国科学院激发态物理开放室基金
关键词
Gd2O3:Eu
纳米荧光体
纳米晶
相变
晶体结构
Gd 2O 3∶Eu nanophosphor, nanocrystal, Gd 2O 3, phase transition, crystal structure
