Phase Diagram of the Ferroelectric Perovskite (Na0.5Bi0.5)1-xBaxTiO3 by Anelastic and Dielectric Relaxation Measurements (Contributo in atti di convegno)

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Label
  • Phase Diagram of the Ferroelectric Perovskite (Na0.5Bi0.5)1-xBaxTiO3 by Anelastic and Dielectric Relaxation Measurements (Contributo in atti di convegno) (literal)
Anno
  • 2012-01-01T00:00:00+01:00 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
  • 10.4028/www.scientific.net/SSP.184.339 (literal)
Alternative label
  • F. Trequattrini (1); F. Cordero (2); F. Craciun (2); E. Mercadelli (3); C. Galassi (3) (2012)
    Phase Diagram of the Ferroelectric Perovskite (Na0.5Bi0.5)1-xBaxTiO3 by Anelastic and Dielectric Relaxation Measurements
    in 16th International Conference on Internal Friction and Mechanical Spectroscopy (ICIFMS-16), Lausanne, Switzerland, July 3 - 8, 2011
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • F. Trequattrini (1); F. Cordero (2); F. Craciun (2); E. Mercadelli (3); C. Galassi (3) (literal)
Pagina inizio
  • 339 (literal)
Pagina fine
  • 344 (literal)
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  • http://www.ttp.net/978-3-03785-338-2.html (literal)
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  • Internal Friction and Mechanical Spectroscopy (literal)
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  • 184 (literal)
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  • 6 (literal)
Note
  • ISI Web of Science (WOS) (literal)
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  • 1 Dipartimento di Fisica, Università di Roma \"La Sapienza\", P.le A. Moro 2, I-00185 Roma, Italy 2 CNR-ISC, Istituto dei Sistemi Complessi, Area della Ricerca di Roma - Tor Vergata,Via del Fosso del Cavaliere 100, I-00133 Roma, Italy 3 CNR-ISTEC, Istituto di Scienza e Tecnologia dei Materiali Ceramici, Via Granarolo 64, I-48018 Faenza, Italy (literal)
Titolo
  • Phase Diagram of the Ferroelectric Perovskite (Na0.5Bi0.5)1-xBaxTiO3 by Anelastic and Dielectric Relaxation Measurements (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#isbn
  • 978-3-03785-338-2 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#curatoriVolume
  • Robert Schaller and D. Mari (eds.) (literal)
Abstract
  • Anelastic and dielectric relaxation measurements have been carried out on poled and unpoled samples of the ferroelectric perovskite (Na0.5Bi0.5)1-xBaxTiO3 (NBT-xBT), with composition in the range between pure NBT and the morphotropic phase boundary, 0 <= x <= 0.08. The complex elastic compliance spectra contain clear indications of both the rhombohedral/tetragonal and tetragonal/cubic transitions, allowing the determination of the phase diagram, which is difficult to obtain by diffraction techniques due to the very low distortions in both the tetragonal and rhombohedral phases and to the structural disorder in the Na/Bi sublattice. An extensive study is made for concentrations in the region of the morphotropic boundary (x ~ 0.06) in order to find possible signatures of monoclinic phase, as for the case of PbZr1-xTixO3 (PZT). The main features in the anelastic curves are compared with those in the dielectric spectra and are tentatively related to different modes of octahedral rotations and polar cation shifts. (literal)
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