Issue 13, 2004
From the journal:

Physical Chemistry Chemical Physics

Amphoteric behaviour of Er3+ dopants in BaTiO3: an Er–LIII edge EXAFS assessment

M. T. Buscaglia,a   V. Buscaglia,a   P. Ghigna,*b   M. Viviani,a   G. Spinolo,b   A. Testinoc  and  P. Nannic  

* Corresponding authors

a Institute of Energetics and Interphases (IENI), National Research Council, via De Marini 6, I-16149 Genoa, Italy

b INSTM, IENI/CNR, and Dept. of Physical Chemistry of the University of Pavia, viale Taramelli 16, I-27100 Pavia, Italy
E-mail: Paolo@chifis.unipv.it
Fax: +39 0383 507575
Tel: +39 0383 507574

c Dept. of Process and Chemical Engineering, University of Genoa, Fiera del Mare, Pad. D, I-16129 Genoa, Italy

Abstract

Er-doped BaTiO3 samples with nominal compositions BaEr0.08Ti0.92O2.96 and Ba0.96Er0.08Ti0.96O3 have been analyzed with Er–LIII edge XAFS. The first sample shows predominant Er substitution on the Ti site of the perovskite structure, the second one shows almost equal occupancy of Er on Ba and Ti sites, thus assessing the ability of the stoichiometry to control the doping mechanism. In more detail, in both cases the main doping mechanism is not exclusive. Er–O distances determined by EXAFS are in good agreement with static lattice simulations.

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Article information

DOI
https://doi.org/10.1039/B402859G
Article type
Paper
Submitted
24 Feb 2004
Accepted
05 Apr 2004
First published
10 May 2004

Phys. Chem. Chem. Phys., 2004,6, 3710-3713

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Amphoteric behaviour of Er3+ dopants in BaTiO3: an Er–LIII edge EXAFS assessment

M. T. Buscaglia, V. Buscaglia, P. Ghigna, M. Viviani, G. Spinolo, A. Testino and P. Nanni, Phys. Chem. Chem. Phys., 2004, 6, 3710 DOI: 10.1039/B402859G

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