Grain size effect on the nonlinear dielectric properties of barium titanate ceramics (Articolo in rivista)

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Label
  • Grain size effect on the nonlinear dielectric properties of barium titanate ceramics (Articolo in rivista) (literal)
Anno
  • 2010-01-01T00:00:00+01:00 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
  • 10.1063/1.3526375 (literal)
Alternative label
  • Lavinia Curecheriu; Maria Teresa Buscaglia; Vincenzo Buscaglia; Zhe Zhao; Liliana Mitoseriu (2010)
    Grain size effect on the nonlinear dielectric properties of barium titanate ceramics
    in Applied physics letters (Online); American Institute of Physics, Melville [NY] (Stati Uniti d'America)
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • Lavinia Curecheriu; Maria Teresa Buscaglia; Vincenzo Buscaglia; Zhe Zhao; Liliana Mitoseriu (literal)
Pagina inizio
  • 242909-1 (literal)
Pagina fine
  • 242909-3 (literal)
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  • http://puma.isti.cnr.it/linkres.php?resource=cnr.ieni/cnr.ieni.ge/2010-A0-035 (literal)
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  • 97 (literal)
Rivista
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  • In: Applied Physics Letters, vol. 97 (24) article n. 242909. American Institute of Physics, 2010. (literal)
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  • 3 (literal)
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  • 24 (literal)
Note
  • ISI Web of Science (WOS) (literal)
  • Scopu (literal)
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  • Department of Physics, Alexandru Ioan Cuza University, Bv. Carol I No. 11, Iasi 700506, Romania; CNR-IENI, Genova; Department of Materials and Environmental Chemistry, University of Stockholm, SE-10691 Stockholm, Sweden (literal)
Titolo
  • Grain size effect on the nonlinear dielectric properties of barium titanate ceramics (literal)
Abstract
  • The nonlinear dielectric properties of dense BaTiO3 ceramics with grain size of 1 µm-90 nm were investigated. In the finest ceramics, the permittivity reduces below 1000 and a remarkable nonhysteretic linear dc-tunability [epsilon(E)] is obtained at high field, above 40 kV/cm. The observed behavior was explained by considering the nanostructured ceramic as a composite formed by ferroelectric grains, whose nonlinearity is reducing, and by low-permittivity nonferroelectric grain boundaries, whose volume fraction increases when decreasing the grain size. Reducing the grain size in ferroelectric dense materials is an alternative route to accomplish the application requirements: nonhysteretic tunability and permittivity below 1000. (literal)
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