Incorporation of Er3+ into BaTiO3 (Articolo in rivista)

Type
Label
  • Incorporation of Er3+ into BaTiO3 (Articolo in rivista) (literal)
Anno
  • 2002-01-01T00:00:00+01:00 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
  • 10.1111/j.1151-2916.2002.tb00313.x (literal)
Alternative label
  • Buscaglia M.T.; Viviani M.; Buscaglia V.; Bottino C.; Nanni P. (2002)
    Incorporation of Er3+ into BaTiO3
    in Journal of the American Ceramic Society; American ceramic society, Westerville, Ohio (Stati Uniti d'America)
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • Buscaglia M.T.; Viviani M.; Buscaglia V.; Bottino C.; Nanni P. (literal)
Pagina inizio
  • 1569 (literal)
Pagina fine
  • 1575 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#url
  • http://onlinelibrary.wiley.com/doi/10.1111/j.1151-2916.2002.tb00313.x/pdf (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
  • 85 (literal)
Rivista
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#pagineTotali
  • 7 (literal)
Note
  • ISI Web of Science (WOS) (literal)
  • Scopu (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • CNR, Institute of Energetics and Interphases, Genoa, Italy; University of Genoa, Dept. of Processing and Chemical Engineering, Genoa, Italy (literal)
Titolo
  • Incorporation of Er3+ into BaTiO3 (literal)
Abstract
  • The incorporation of Er3? into BaTiO3 ceramics was investigated on samples containing 0.25, 0.5, 1, 2, 8, and 10 at.% of dopant, after sintering at 1350-1550°C in air. For Er3? concentrations <1 at.%, dense and large-grained ceramics with low room-temperature resistivity (102-103 ??cm) were obtained. The observed properties are largely independent of stoichiometry. Simultaneous substitution of Er3? at both cation sites, with higher preference for the Ba site, is proposed. The behavior of heavily doped ceramics depends on stoichiometry. When Ba/Ti < 1, the electrical properties change from slightly semiconducting to insulating as Er concentration increases from 2 to 8 at.%. The ceramics have tetragonal perovskite structure and contain a large amount of Er2Ti2O7 pyrochlore phase. On the other hand, when Ba/Ti > 1, the ceramics are insulating, fine-grained, and single phase. In this case, incorporation of Er3? predominantly occurs at the Ti site, with oxygen vacancy compensation. Incorporation is accompanied by a significant reduction of tetragonality and by expansion of the unit cell. The different results indicate that Er3+? solubility at the Ba site does not exceed 1 at.%, whereas solubility at the Ti site is at least 10 at.%. However, the incorporation of Er3+? and the resulting properties are also strongly affected by sintering conditions. (literal)
Editore
Prodotto di
Autore CNR

Incoming links:


Autore CNR di
Prodotto
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#rivistaDi
Editore di
data.CNR.it