Optical spectra of Nd3+ in niobates of the tetragonal tungsten bronze family

被引：14

作者：

Cavalli, E

Calestani, G

Bovero, E

Belletti, A

Migliori, A

机构：

[1] Univ Parma, INFM, I-43100 Parma, Italy

[2] Univ Parma, Dipartimento Chim Gen Inorgan Chim Anal & Chim Fi, I-43100 Parma, Italy

[3] CNR, IMM, Sez Bologna, I-40129 Bologna, Italy

来源：

JOURNAL OF PHYSICS-CONDENSED MATTER | 2004年 / 16卷 / 06期

关键词：

D O I：

10.1088/0953-8984/16/6/004

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

Nd:Ba-2.NaNb5O15 (Nd:BNN), Nd:Ba2KNb5O15 (Nd:BKN) and Ba-1.Nd-90(0.26) Li0.42Nb5O15 (BNdLN) single crystals with the tetragonal tungsten-bronze (TTB) structure have been grown by means of the 'flux growth' method. The 10 and 298 K absorption and emission spectra and the room temperature decay curves have been measured and discussed in the light of the crystallographic information. The room temperature absorption spectra of Nd:BKN and BNdLN have been analysed in the framework of Judd-Ofelt theory and the Omega(lambda) (lambda = 2, 4, 6) intensity parameters have been evaluated. The structural and emission properties of a new TB phase, Nd:Ba2LiNb5O15 (Nd:BLN), have also been reported because they are useful in the discussion concerning the site occupancy of the active ions in these materials.

引用

页码：729 / 739

页数：11

共 16 条

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