Photoluminescence investigations on the nanoscale phase transition in Pb(Mg1/3Nb2/3)O3

被引：1

作者：

Sivasubramanian, V. ^{[1
]}

Kesavamoorthy, R.

Subramanian, V.

机构：

[1] Indira Gandhi Ctr Atom Res, Div Mat Sci, Kalpakkam 603102, Tamil Nadu, India

[2] Indian Inst Technol, Dept Phys, Madras 600036, Tamil Nadu, India

来源：

SOLID STATE COMMUNICATIONS | 2007年 / 142卷 / 11期

关键词：

relaxor ferroelectrics; core-shell nanostructure; phase transition; photoluminescence;

D O I：

10.1016/j.ssc.2007.03.016

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

The temperature dependence of the photoluminescence spectra of the relaxor ferroelectric Pb(Mg1/3Nb2/3)O-3 has been reported. The temperature behaviours of the 1.57, 1.67 and 1.73 eV bands indicate a phase transition at 110 K. This is attributed to a structural phase transition in the charged nanoshell. Analysis of the temperature dependence of 1.67 eV band intensity with a thermal quenching model indicated the existence of a phonon mode at 1153 cm(-1). This mode is identified in the Raman spectra measurement. The intensity of the 1.73 eV band showing an anomalous behaviour at 210 K is attributed to a transition from a crystalline phase to an amorphous phase in the charged nanoshell. (c) 2007 Elsevier Ltd. All rights reserved.

引用

页码：651 / 654

页数：4

共 13 条

[11] Raman scattering in (1-x)Pb(Mg1/3Nb2/3)O3-xPbTiO3 [J].

Ohwa, H ;

Iwata, M ;

Orihara, H ;

Yasuda, N ;

Ishibashi, Y .

JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, 2001, 70 (10) :3149-3154

[12] Study of surface acoustic phonon modes in relaxor Pb(Mg1/3Nb2/3)O3 [J].

Sivasubramanian, V ;

Kesavamoorthy, R ;

Sastry, VS ;

Subramanian, V .

APPLIED PHYSICS LETTERS, 2004, 85 (05) :798-800

[13] FABRICATION OF PEROVSKITE LEAD MAGNESIUM NIOBATE [J].

SWARTZ, SL ;

SHROUT, TR .

MATERIALS RESEARCH BULLETIN, 1982, 17 (10) :1245-1250

← 1 2 →