Elastic and dielectric measurements of the structural transformations in the ferroelectric perovskite (Na1/2Bi1/2)1-xBaxTiO3 (Contributo in atti di convegno)

Type
Label
  • Elastic and dielectric measurements of the structural transformations in the ferroelectric perovskite (Na1/2Bi1/2)1-xBaxTiO3 (Contributo in atti di convegno) (literal)
Anno
  • 2011-01-01T00:00:00+01:00 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
  • 10.4028/www.scientific.net/SSP.172-174.161 (literal)
Alternative label
  • Francesco Cordero (1); Francesco Trequattrini (2); Floriana Craciun (1); Elisa Mercadelli (3); Carmen Galassi (3) (2011)
    Elastic and dielectric measurements of the structural transformations in the ferroelectric perovskite (Na1/2Bi1/2)1-xBaxTiO3
    in Phase Transformations in Inorganic Materials (PTM), Avignon, France, June 6-11, 2010
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • Francesco Cordero (1); Francesco Trequattrini (2); Floriana Craciun (1); Elisa Mercadelli (3); Carmen Galassi (3) (literal)
Pagina inizio
  • 161 (literal)
Pagina fine
  • 165 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#url
  • http://www.ttp.net/978-3-03785-143-2.html (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#titoloVolume
  • Solid-Solid Phase Transformations in Inorganic Materials (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#volumeInCollana
  • 172-174 (literal)
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  • 7 (literal)
Note
  • ISI Web of Science (WOS) (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • 1 CNR-ISC Istituto dei Sistemi Complessi, Area della Ricerca di Roma - Tor Vergata, Via del Fosso del Cavaliere 100, I-00133 Roma, Italy 2 Dipartimento di Fisica, Università di Roma \"La Sapienza\", P.le A. Moro 2, I-00185 Roma, Italy 3 CNR-ISTEC, Istituto di Scienza e Tecnologia dei Materiali Ceramici, Via Granarolo 64, I-48018 Faenza, Italy (literal)
Titolo
  • Elastic and dielectric measurements of the structural transformations in the ferroelectric perovskite (Na1/2Bi1/2)1-xBaxTiO3 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#isbn
  • 978-3-03785-143-2 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#curatoriVolume
  • Yves Bréchet, Emmanuel Clouet, Alexis Deschamps, Alphonse Finel and Frédéric Soisson (eds.) (literal)
Abstract
  • The perovskite (Na1/2Bi1/2)TiO3 (NBT) undergoes a series of structural and polar transitions starting from the high temperature paraelectric phase: tetragonal paraelectric, tetragonal antiferroelectric, rhombohedral antiferroelectric and finally rhombohedral ferroelectric, according to neutron diffraction and dielectric spectroscopy. In solid solution with BaTiO3 (BT) the ferroelectric phase changes from rhombohedral to tetragonal, at the so-called morphotropic phase boundary, and the phases at higher temperature become ill-defined, also because of the large lattice disorder induced by the coexistence of differently charged cations in the same sublattice. Combined dielectric and anelastic spectroscopy measurements are presented, which clarify some issues related to the phase transitions in NBT-BT. The influence of Ba substitution on the tetragonal antiferroelectric phase is determined for the first time, and the possibility that a monoclinic phase, although with very short coherence length, exists near the morphotropic phase boundary is discussed in view of a large maximum of the elastic compliance. (literal)
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