Bibliographic Details
| Title: |
Local-site cation ordering of Eu3+ ion in doped PbTiO3. |
| Authors: |
Mendez-González, Y.1, Pentón-Madrigal, A.2 arbelio@fisica.uh.cu, Peláiz-Barranco, A.2, Figueroa, Santiago J.A.3, de Oliveira, L.A.S.4, Concepción-Rosabal, B.2 |
| Source: |
Physica B. Feb2014, Vol. 434, p171-176. 6p. |
| Subjects: |
Cations, Europium, Doping agents (Chemistry), Lead titanate, X-ray diffraction, Extended X-ray absorption fine structure |
| Abstract: |
Abstract: X-ray diffraction (XRD), extended X-ray absorption fine structure (EXAFS), and scanning electron microscopy experiments were carried out in the (Pb0.88Eu0.08)TiO3 ferroelectric compound with a perovskite type structure. Qualitative EXAFS analysis has shown that Eu3+ ions substitute to Pb2+ and Ti4+ ions at A and B sites of the ABO3 structure, respectively. The XRD pattern refinement was consistent with the Eu3+ substitution at both A and B sites, which provides the formation of donor and acceptor-type defects. The shape of the observed X-ray lines profiles has shown features, which are known for this kind of ferroelectric material to be typical of the ferroelectric domains microstructure. A phenomenological model has been used for fitting the diffraction profiles by the Rietveld method. [Copyright &y& Elsevier] |
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| Database: |
Engineering Source |
