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Synthesis and characterization of magnesium doped lead titanate
Author(s) -
Fadil F. Z.,
Lamcharfi T.,
Abdi F.,
Aillerie M.
Publication year - 2011
Publication title -
crystal research and technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.377
H-Index - 64
eISSN - 1521-4079
pISSN - 0232-1300
DOI - 10.1002/crat.201000665
Subject(s) - raman spectroscopy , scanning electron microscope , magnesium , materials science , doping , titanate , lead titanate , ceramic , ion , particle size , analytical chemistry (journal) , chemical engineering , nuclear chemistry , chemistry , mineralogy , metallurgy , dielectric , ferroelectricity , composite material , organic chemistry , physics , optoelectronics , optics , engineering
Abstract Magnesium (Mg) doped lead titanate powders (PT: Mg) ceramics, with various Mg contents (0, 2.5, 5, 7.5, 10, 12.5, 15, 17.5, 20, and 30 mole %), are prepared by the sol‐gel method and characterized by X‐Ray diffraction (XRD), scanning electron microscopy (SEM) and Raman spectroscopy. XRD results show that the magnesium diminishes the lattice tetragonality of PT:Mg. The average particle size and morphology were studied by SEM. The investigations done by Raman spectroscopy allow the analyzis of the substitution mechanism behavior related to the Mg incorporation into PT structure. A concentration threshold appears around 10% of Mg corresponding in a change of the compensation process with Mg 2+ ions replacing Pb 2+ ions below and both Pb 2+ and Ti 4+ above. (© 2011 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)