Investigation of cation environments in polycrystalline and single crystal PMN-PT using electron spectroscopy

Author

McBride, S.P. ; Bell, A.J.

Author_Institution

Inst. of Mater. Res., Leeds Univ., UK

fYear

2002

fDate

28 May-1 June 2002

Firstpage

451

Lastpage

454

Abstract

The present study has been focused on ABO₃ type perovskite relaxor based ferroelectric single crystals and polycrystalline forms of Pb(Mg₁3/Nb₂3/)O₃-PbTiO₃. Electron spectroscopy techniques including X-ray Photoelectron Spectroscopy (XPS) and Electron Energy Loss Spectroscopy (EELS) in the TEM have been used to investigate chemical environments and oxidation states of the A and B site occupants. Shifts in electron binding energies over the reported values for the cations in their native oxides have been measured using XPS and the oxidation state confirmed using EELS. In conclusion, the reported shifts are attributed to electronic polarisation, the greatest shift being exhibited by Pb²⁺.

Keywords

X-ray photoelectron spectra; binding energy; core levels; electron energy loss spectra; lead compounds; relaxor ferroelectrics; transmission electron microscopy; EELS; PMN-PbTiO₃; PbMgO3NbO3-PbTiO3; TEM; XPS; binding energies; cation environments; chemical environments; core fine spectrum; crystal orientation dependence; electronic polarisation; ferroelectric single crystals; oxidation state; oxidation states; perovskite relaxor based ferroelectric; polycrystalline forms; site occupants; Chemicals; Crystals; Electrons; Energy loss; Energy measurement; Ferroelectric materials; Niobium; Oxidation; Polarization; Spectroscopy;

fLanguage

English

Publisher

ieee

Conference_Titel

Applications of Ferroelectrics, 2002. ISAF 2002. Proceedings of the 13th IEEE International Symposium on

ISSN

1099-4734

Print_ISBN

0-7803-7414-2

Type

conf

DOI

10.1109/ISAF.2002.1195965

Filename

1195965