Field-induced phase transition and relaxor character in submicrometer-structured lead-free (Bi0.5Na0.5)0.94Ba0.06TiO3 piezoceramics at the morphotropic phase boundary (Articolo in rivista)

Type

• Prodotto della ricerca (Classe)
• Articolo in rivista (Classe)

Label

• Field-induced phase transition and relaxor character in submicrometer-structured lead-free (Bi0.5Na0.5)0.94Ba0.06TiO3 piezoceramics at the morphotropic phase boundary (Articolo in rivista) (literal)

Anno

• 2011-01-01T00:00:00+01:00 (literal)

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

• 10.1109/TUFFC.2011.2029 (literal)

Alternative label

• Galassi, Carmen (1); Mercadelli, Elisa (1); Pardo, Lorena (3); Brebøl, Klaus (2); García, Alvaro (3) (2011)
  Field-induced phase transition and relaxor character in submicrometer-structured lead-free (Bi0.5Na0.5)0.94Ba0.06TiO3 piezoceramics at the morphotropic phase boundary
  in IEEE transactions on ultrasonics, ferroelectrics, and frequency control; The Institute of Electrical and Electronics Engineers (IEEE), Piscataway (Stati Uniti d'America)
  (literal)

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

• Galassi, Carmen (1); Mercadelli, Elisa (1); Pardo, Lorena (3); Brebøl, Klaus (2); García, Alvaro (3) (literal)

Pagina inizio

• 1893 (literal)

Pagina fine

• 1904 (literal)

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

• http://ieeexplore.ieee.org/xpl/articleDetails.jsp?arnumber=6020860 (literal)

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

• 58 (literal)

Rivista

• IEEE transactions on ultrasonics, ferroelectrics, and frequency control (Rivista)

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

• 12 (literal)

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

• 9 (literal)

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

• (1) CNR-ISTEC, Faenza; (2) Limiel ApS, DK-4772 Langebæk, Denmark; (3) Instituto de Ciencia de Materiales de Madrid. Consejo Superior de Investigaciones Científicas (ICMM-CSIC). Cantoblanco. 28049- Madrid (Spain) (literal)

Titolo

• Field-induced phase transition and relaxor character in submicrometer-structured lead-free (Bi0.5Na0.5)0.94Ba0.06TiO3 piezoceramics at the morphotropic phase boundary (literal)

Abstract

• Abstract-Submicrometer-structured (Bi0.5Na0.5)0.94Ba0.06TiO3 ceramics (?G?<720nm) from nanopowders were studied. The real part of the optimum room temperature set of piezoelectric coefficients obtained from resonances of the BNBT6 dense ceramic disks and shear plates [d31=(-37+1.33i)pCN-1, d15=(158.3-8.31i)pCN-1, kt=40.4%, kp=26.8%, and k15=40.2%] and d33(148 pCN-1) can be compared with the reported properties for coarse-grained ceramics. Shear resonance of thickness-poled plates is observed at T=140°C. Permittivity versus temperature curves of poled samples show relaxor character up to Ti=230°C on heating and Ti=210°C on cooling of the depoled samples. The phase transition from the room-temperature ferroelectric (FE) to a low-temperature non-polar at zero field (LTNPZF) phase can be observed as a sharp jump in ?? 33?(T) curves or, as the degree of poling decreases, as a soft change of slope of the curves at TFELTNPZF=Td=100°C. This dielectric anomaly is not observed on cooling of depoled samples, because the FE phase is field-induced. The observed macroscopic piezoelectric activity above Td is a consequence of the coexistence of nanoregions of the FE phase in the interval between TFE-LTNPZF and Ti (literal)

Editore

• The Institute of Electrical and Electronics Engineers (IEEE) (Editore)

Prodotto di

• Processi e materiali per applicazioni elettromeccaniche (SP.P01.037.001) (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 "Field-induced phase transition and relaxor character in submicrometer-structured lead-free (Bi0.5Na0.5)0.94Ba0.06TiO3 piezoceramics at the morphotropic phase boundary" (Insieme di parole chiave)

Incoming links:

Prodotto

• Institute of science and technology for ceramics (ISTEC) (Istituto)
• Processi e materiali per applicazioni elettromeccaniche (SP.P01.037.001) (Modulo)

Autore CNR di

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

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

• IEEE transactions on ultrasonics, ferroelectrics, and frequency control (Rivista)

Editore di

• The Institute of Electrical and Electronics Engineers (IEEE) (Editore)

Insieme di parole chiave di

• Parole chiave di "Field-induced phase transition and relaxor character in submicrometer-structured lead-free (Bi0.5Na0.5)0.94Ba0.06TiO3 piezoceramics at the morphotropic phase boundary" (Insieme di parole chiave)