Effects of coupling between octahedral tilting and polar modes on the phase diagram of the ferroelectric perovskites PbZr1-xTixO3 and (Na1/2Bi1/2)1-xBaxTiO3 (Articolo in rivista)

Type

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

Label

• Effects of coupling between octahedral tilting and polar modes on the phase diagram of the ferroelectric perovskites PbZr1-xTixO3 and (Na1/2Bi1/2)1-xBaxTiO3 (Articolo in rivista) (literal)

Anno

• 2014-01-01T00:00:00+01:00 (literal)

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

• 10.1080/01411594.2013.796590 (literal)

Alternative label

• F. Cordero (a); F. Craciun (a); F. Trequattrini (b); C. Galassi (c) (2014)
  Effects of coupling between octahedral tilting and polar modes on the phase diagram of the ferroelectric perovskites PbZr1-xTixO3 and (Na1/2Bi1/2)1-xBaxTiO3
  in Phase transitions
  (literal)

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

• F. Cordero (a); F. Craciun (a); F. Trequattrini (b); C. Galassi (c) (literal)

Pagina inizio

• 255 (literal)

Pagina fine

• 270 (literal)

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

• http://www.tandfonline.com/doi/abs/10.1080/01411594.2013.796590#.UpifC8SkqaQ (literal)

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

• 87 (literal)

Rivista

• Phase transitions (Rivista)

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

• 16 (literal)

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

• 3 (literal)

Note

• ISI Web of Science (WOS) (literal)
• Scopu (literal)

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

• (a) CNR-ISC, Istituto dei Sistemi Complessi, Area della Ricerca di Roma - Tor Vergata, Via del Fosso del Cavaliere, Roma, Italy (b) Dipartimento di Fisica, Università di Roma 'La Sapienza', Roma, Italy (c) CNR-ISTEC, Istituto di Scienza e Tecnologia dei Materiali Ceramici, Via Granarolo, Faenza, Italy (literal)

Titolo

• Effects of coupling between octahedral tilting and polar modes on the phase diagram of the ferroelectric perovskites PbZr1-xTixO3 and (Na1/2Bi1/2)1-xBaxTiO3 (literal)

Abstract

• Recent anelastic and dielectric spectroscopy measurements revealed new features of the phase diagram of PbZr1-xTixO3 regarding the manner in which various ferroelectric and octahedral tilt instability lines approach each other. Rather than crossing, they tend to merge, also after considerable bending, and give rise to combined polar/tilt transitions over extended concentration ranges. The same effect is also found in (Na1/2Bi1/2)1-xBaxTiO3. It is proposed that such a behaviour results from cooperative coupling between the polar and tilt modes, and could be explained by a mechanism similar to that proposed by Holakowski in 1973, where coupling of two-order parameters with different symmetries produces a transformation of mixed character. The possible reasons are also discussed why disordered tilting, proposed to occur in correspondence with an elastic stiffening near the antiferroelectric/ferroelectric border in PZT, would be particularly difficult to reveal by diffraction. (literal)

Prodotto di

• Materiali Funzionali e Sistemi Disordinati (MD.P02.003.001) (Modulo)
• Processi e materiali per applicazioni elettromeccaniche (SP.P01.037.001) (Modulo)
• Institute of science and technology for ceramics (ISTEC) (Istituto)

Autore CNR

• FLORIANA RUSANESCU CRACIUN (Unità di personale interno)
• CARMEN GALASSI (Unità di personale interno)
• FRANCESCO CORDERO (Unità di personale interno)

Insieme di parole chiave

• Keywords of "Effects of coupling between octahedral tilting and polar modes on the phase diagram of the ferroelectric perovskites PbZr1-xTixO3 and (Na1/2Bi1/2)1-xBaxTiO3" (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)
• Materiali Funzionali e Sistemi Disordinati (MD.P02.003.001) (Modulo)

Autore CNR di

• CARMEN GALASSI (Unità di personale interno)
• FRANCESCO CORDERO (Unità di personale interno)
• FLORIANA RUSANESCU CRACIUN (Unità di personale interno)

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

• Phase transitions (Rivista)

Insieme di parole chiave di

• Keywords of "Effects of coupling between octahedral tilting and polar modes on the phase diagram of the ferroelectric perovskites PbZr1-xTixO3 and (Na1/2Bi1/2)1-xBaxTiO3" (Insieme di parole chiave)