Amorphization and grain size effect on milled PbTiO3 studied by Raman scattering and visible photoluminescence emission

Raman scattering and photoluminescence (PL) studies on milled PbTiO3 are presented in this paper. The results suggest that the visible PL emission could be related to both the localized states in the interface between the amorphous layer and the crystalline core and the amorphous layer itself. The R...

Full description

Saved in:
Bibliographic Details
Published in:Applied physics. A, Materials science & processing Materials science & processing, 2002-06, Vol.74 (6), p.787-789
Main Authors: LANCIOTTI, F. JR, PIZANI, P. S, CAMPOS, C. E. M, LEITE, E. R, SANTOS, L. P. S, CARRENO, N. L. V, LONGO, E
Format: Article
Language:English
Subjects:
Amorphization
Condensed matter: structure, mechanical and thermal properties
Crystal structure
Emission
Emission analysis
Equations of state, phase equilibria, and phase transitions
Exact sciences and technology
Glass transitions
Grain size
Lattice dynamics
Materials science
Phonon states and bands, normal modes, and phonon dispersion
Phonons and vibrations in crystal lattices
Photoluminescence
Physics
Raman scattering
Specific phase transitions
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Raman scattering and photoluminescence (PL) studies on milled PbTiO3 are presented in this paper. The results suggest that the visible PL emission could be related to both the localized states in the interface between the amorphous layer and the crystalline core and the amorphous layer itself. The Raman spectrum of PbTiO3 milled for a long time showed the vibrational density of states, and a detailed analysis of the soft mode allowed us to conclude that the PbTiO3 crystalline core did not experience any structural phasetransition.
ISSN:0947-8396
1432-0630
DOI:10.1007/s003390100969