Structure - properties relationships in Ce-doped lead titanate ceramics (Contributo in atti di convegno)

Type
Label
  • Structure - properties relationships in Ce-doped lead titanate ceramics (Contributo in atti di convegno) (literal)
Anno
  • 2006-01-01T00:00:00+01:00 (literal)
Alternative label
  • E. Dimitriu; R. Ramer (1); F. Craciun (3); G. Prodan; V. Ciupina (2006)
    Structure - properties relationships in Ce-doped lead titanate ceramics
    in 6th International Balkan Workshop on Applied Physics, Constanta, Romania, July 5-7, 2005
    (literal)
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  • E. Dimitriu; R. Ramer (1); F. Craciun (3); G. Prodan; V. Ciupina (literal)
Pagina inizio
  • 55 (literal)
Pagina fine
  • 59 (literal)
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  • 8 (literal)
Rivista
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  • 6th International Balkan Workshop on Applied Physics, Constanta, Romania, July 5-7, 2005, (2005). (literal)
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  • 1 (literal)
Note
  • ISI Web of Science (WOS) (literal)
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  • [ 1 ] Univ New S Wales, Sch Elect Engn & Telecommun, Sydney, NSW 2052, Australia [ 2 ] REGO COM, Bucharest, Romania [ 3 ] CNR, Ist Sistemi Complessi, I-00133 Rome, Italy [ 4 ] Univ Ovidius, Interdisciplinary Res Inst Micro & Nanostruct, Constanta, Romania (literal)
Titolo
  • Structure - properties relationships in Ce-doped lead titanate ceramics (literal)
Abstract
  • The interest on the materials containing CeO2 has increased due to the ability of CeO2 to undergo rapid redox cycles. The oxygen partial pressure and the presence of cations with a lower oxidation state influence the reduction behaviour of CeO2. This work reports a comparative study on microstructure, dielectric and piezoelectric properties of Ce- and Ce, Eu doped lead titanate ceramics. The samples with a complex composition were prepared by solid-state reaction of oxide and carbonate powders. Substitutions of Ce4+ and Ce4+, Eu3+ for Pb2+, and Mn4+ for Ti4+ were performed. Nanostructured materials with tetragonal perovskite phase were revealed and investigated by high-resolution transmission electron microscopy (HRTEM), selected area electron diffraction (SAED) and X-ray diffraction. The local distribution of the chemical elements was revealed using the wavelength dispersive spectroscopy. The porosity of the ceramics was also investigated. Dielectric permittivity was measured in a wide temperature and frequency ran e. The temperature dependence of the piezoelectric properties is reported. It is found that the substitution of Eu3+ for Ce4+ improves the piezoelectric properties of the PT-type ceramics. (literal)
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