XPS investigation of surface properties of Ba (1-x) SrxTiO3 powders prepared by low temperature aqueous synthesis (Articolo in rivista)

Type
Label
  • XPS investigation of surface properties of Ba (1-x) SrxTiO3 powders prepared by low temperature aqueous synthesis (Articolo in rivista) (literal)
Anno
  • 1999-01-01T00:00:00+01:00 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
  • 10.1016/S0955-2219(98)00371-9 (literal)
Alternative label
  • Viviani, M.; Buscaglia, M.T.; Nanni, P.; Parodi, R.; Gemme, G.; Dacca, A. (1999)
    XPS investigation of surface properties of Ba (1-x) SrxTiO3 powders prepared by low temperature aqueous synthesis
    in Journal of the European Ceramic Society; Elsevier Science Ltd., Oxford (Regno Unito)
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • Viviani, M.; Buscaglia, M.T.; Nanni, P.; Parodi, R.; Gemme, G.; Dacca, A. (literal)
Pagina inizio
  • 1047 (literal)
Pagina fine
  • 1051 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#url
  • http://linkinghub.elsevier.com/retrieve/pii/S0955221998003719 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
  • 19 (literal)
Rivista
Note
  • ISI Web of Science (WOS) (literal)
  • Scopu (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • Institute of Chemistry, Fac. Eng., Univ. Genoa, P.le J.F. K., Genoa, Italy; Natl. Institute of Nuclear Physics, Via Dodecaneso 33, I-16141, Genoa, Italy (literal)
Titolo
  • XPS investigation of surface properties of Ba (1-x) SrxTiO3 powders prepared by low temperature aqueous synthesis (literal)
Abstract
  • Barium titanate powders prepared by wet chemical routes are known to show large deviation from stoichiometry and contamination at surface, due to chemical instability in solution at low pH values (< 9), and carbonates formation after exposition to air. The surface composition of ceramic powders prepared via rite low temperature Aqueous Synthesis (LTAS), with nominal formula Ba(1-x)SrxTiO3 (x less than or equal to 0.1), have been investigated on pressed pellets of as-prepared powders by X-ray photoelectron spectroscopy. BaCO3 content has been evaluated from Ba3d and Ba4d spectra. The total relative amount of carbonate has been measured by X-ray diffraction and compared to that present on surface. From these data, the formation of BaCO3 by surface reaction with the atmosphere or by bulk precipitation is discussed (literal)
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