Fluorophosphate glasses activated by rare-earth ions and AgBr

被引：9

作者：

Aseev, V. A. ^{[1
]}

Burdaev, P. A. ^{[2
]}

Kolobkova, E. V. ^{[1
,2
]}

Nikonorov, N. V. ^{[1
]}

机构：

[1] St Petersburg State Univ Informat Technol Mech &, St Petersburg 199034, Russia

[2] Tech Univ, St Petersburg State Inst Technol, St Petersburg 190013, Russia

来源：

GLASS PHYSICS AND CHEMISTRY | 2012年 / 38卷 / 04期

关键词：

silver nanocluster; surface plasmon resonance; nanoparticle; electron donor; rare-earth ion; nano-composite particle; metallic cluster shell; SILVER;

D O I：

10.1134/S1087659612040037

中图分类号：

TQ174 [陶瓷工业]; TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Analysis of the absorption band position for colloidal silver in fluorophosphate glasses of the composition (0.95 - x - y)(MgCaBaSrAl2F14)-0.05Ba(PO3)(2)-xPbF(2)-yLnF(3) (where Ln = Eu, Ce, Sm, Tb; 0 a parts per thousand currency sign x a parts per thousand currency sign 0.2; y = 0.01, 0.02) with small additives of AgBr (0.04 wt % above 100%) has been performed. It has been shown that joint introduction of AgBr and EuF3 with additional heat treatment of the glasses below the temperature of the onset of crystallization leads to a rise of the plasmon absorption band of silver nanoparticles. It has been assumed that the reason for the observed shift of the plasmon absorption band is the formation of a similar to 0.5-nm-thick shell of AgBr on the surface of a metallic Ag (n) (0) -cluster.

引用

页码：366 / 372

页数：7

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