OPTICAL-PROPERTIES OF SODIUM BETA-ALUMINA SINGLE-CRYSTALS DOPED WITH NEODYMIUM AND CHROMIUM-NEODYMIUM

被引：2

作者：

ALONSOLUCAS, V ^{[1
]}

ASCHEHOUG, P ^{[1
]}

KAHNHARARI, A ^{[1
]}

THERY, J ^{[1
]}

VIANA, B ^{[1
]}

VIVIEN, D ^{[1
]}

机构：

[1] ENSCP,CHIM APPL ETAT SOLIDE LAB,CNRS,URA 1466,F-75231 PARIS 05,FRANCE

来源：

JOURNAL OF MATERIALS CHEMISTRY | 1995年 / 5卷 / 08期

关键词：

D O I：

10.1039/jm9950501237

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Single crystals of sodium p-alumina have been grown by two methods: flux evaporation and a new process, solid-vapour reaction. These compounds were doped with neodymium through a homogeneous ion-exchange reaction. Their X-ray diffuse scattering patterns show a two-dimensional (2D) superstructure (a root 3; a root 3) for Nd beta-alumina. The optical behaviour of NaNd beta-alumina single crystals is reported here. A strong absorption occurs at 580 nm. Nd3+ emission shows a broad band (FWHM about 30 nm) centred at 1.06 mu m and the Nd3+ lifetime measured at room temperature is about 530 mu s. Finally, chromium-neodymium co-doped samples of beta-alumina single crystals are investigated. Time-resolved spectroscopy and lifetime analysis indicate that Cr-->Nd energy transfer takes place in this host matrix.

引用

页码：1237 / 1240

页数：4

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