Optical Study of Eu3+ Ion Embedded in (1-x)Na2WO4-xP2O5 Glasses Highlighting a Temperature Effect on its Local Environment

Author:

Antić-Fidančev E.1,Viana Bruno2,Aschehoug P.1,Bih L.3,Nadiri A.4,Taibi M.5,Aride J.5

Affiliation:

1. ENSCP

2. Ecole National Supérieure de Chimie de Paris (ENSCP)

3. Laboratoire de Physico-Chimie des Matériaux-FST-Errachidia

4. UFR-SMI

5. Laboratoire associé à l'AUF, LAF n°502, Ecole Normale Supérieure Takaddoum

Abstract

Tungsten-phosphate glasses doped with trivalent europium ion are synthesized and their spectroscopic properties are analyzed. Following the evolution of the 5D0 → 7F1 electronic transition in a series of various glass compositions via two rank crystal field parameters (cfp’s), a slight modification of the local symmetry is evidenced in the series. Decay lifetimes of 5D1 and 5D0 levels are also analyzed. Optical properties clearly correspond to Eu3+ in the glassy phase. At room as well as at liquid nitrogen temperatures, the emission spectra display comparable features with prominent 5D0 → 7F2 transition. However, at 77 K, the maximum 7F1 splitting exhibits an increase of ≈ 20-23 % for all compounds. This increase is directly connected to a change in local environment around the rare earth ion. The optical properties and the crystal field variation could be correlated with the shortness of the metal-oxygen distances produced by the pressure when cooling.

Publisher

Trans Tech Publications, Ltd.

Subject

Mechanical Engineering,Mechanics of Materials,Condensed Matter Physics,General Materials Science

Cited by 2 articles. 订阅此论文施引文献 订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献

1. Optical and structural characterization of samarium and europium-doped phosphate glasses;Journal of Non-Crystalline Solids;2013-06

2. Ionic Transport Behavior in Na2SO4-Li2O-MoO3-P2O5 Glassy System;Smart Materials for Energy, Communications and Security;2008

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