Characterization of Nanostructured Phases and Peculiar Phase Transitions in BNBT Lead-Free Piezoceramics (Contributo in atti di convegno)

Type

• Contributo in atti di convegno (Classe)
• Prodotto della ricerca (Classe)

Label

• Characterization of Nanostructured Phases and Peculiar Phase Transitions in BNBT Lead-Free Piezoceramics (Contributo in atti di convegno) (literal)

Anno

• 2014-01-01T00:00:00+01:00 (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi

• 10.4028/www.scientific.net/AST.90.12 (literal)

Alternative label

• L. Pardo, A. García, K.Brebøl, E. Mercadelli and C. Galassi (2014)
  Characterization of Nanostructured Phases and Peculiar Phase Transitions in BNBT Lead-Free Piezoceramics
  in CIMTEC 2014 13th Ceramics Congress, Montecatini Terme, 8-13 June 2014
  (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori

• L. Pardo, A. García, K.Brebøl, E. Mercadelli and C. Galassi (literal)

Pagina inizio

• 12 (literal)

Pagina fine

• 18 (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#titoloVolume

• 13th International Ceramics Congress - Part D (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#volumeInCollana

• 90 (literal)

Rivista

• Advances in science and technology (Rivista)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#pagineTotali

• 7 (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni

• Instituto de Ciencia de Materiales de Madrid (ICMM) Consejo Superior de Investigaciones Científicas (CSIC) Limiel ApS National Research Council of Italy, Institute of Science and Technology for Ceramics (CNR-ISTEC). (literal)

Titolo

• Characterization of Nanostructured Phases and Peculiar Phase Transitions in BNBT Lead-Free Piezoceramics (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#curatoriVolume

• Pietro Vincenzini (literal)

Abstract

• Submicron-structured (Bi0.5Na0.5)0.94Ba0.06TiO3 (BNBT6) dense ceramics, from nanometric powder synthesized by sol gel auto-combustion at 500ºC and obtained by hot-pressing (800ºC-2h) and subsequent recrystallization at moderate temperature (1000-1050ºC-1h), have been studied. In-situ measurements at the shear mode of electromechanical resonance of non-standard thickness-poled shear plates as a function of the temperature show higher depolarization temperature than measurements at the radial mode of thin disks. Shear mode related material coefficients are measurable up to 160ºC, being k15?30% and d15?250 pC.N-1 at 130ºC. Depolarization is a complex phenomena caused by a ferroelectric (FE) macrodomains thermal randomization and a phase transition from the field-induced FE phase to a relaxor phase. The early stage of such a transition involves a non-negligible piezoelectricity arising most probably by the percolative coexistence of ferroelectric macrodomains in the resonator under the given stress field for each resonance mode. (literal)

Prodotto di

• Processi e materiali per applicazioni elettromeccaniche (SP.P02.009.001) (Modulo)
• Institute of science and technology for ceramics (ISTEC) (Istituto)

Autore CNR

• ELISA MERCADELLI (Persona)
• CARMEN GALASSI (Unità di personale interno)

Insieme di parole chiave

• Parole chiave di "Characterization of Nanostructured Phases and Peculiar Phase Transitions in BNBT Lead-Free Piezoceramics" (Insieme di parole chiave)

Incoming links:

Prodotto

• Institute of science and technology for ceramics (ISTEC) (Istituto)
• Processi e materiali per applicazioni elettromeccaniche (SP.P02.009.001) (Modulo)

Autore CNR di

• CARMEN GALASSI (Unità di personale interno)
• ELISA MERCADELLI (Persona)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#rivistaDi

• Advances in science and technology (Rivista)

Insieme di parole chiave di

• Parole chiave di "Characterization of Nanostructured Phases and Peculiar Phase Transitions in BNBT Lead-Free Piezoceramics" (Insieme di parole chiave)