http://www.cnr.it/ontology/cnr/individuo/prodotto/ID197589
Rhombohedral and Monoclinic Phases of PZT near the Antiferroelectric and the Morphotropic Boundaries (Contributo in atti di convegno)
- Type
- Label
- Rhombohedral and Monoclinic Phases of PZT near the Antiferroelectric and the Morphotropic Boundaries (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.184.333 (literal)
- Alternative label
F. Cordero (1); F. Trequattrini (2); F. Craciun (1); C.Galassi (3) (2012)
Rhombohedral and Monoclinic Phases of PZT near the Antiferroelectric and the Morphotropic Boundaries
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. Cordero (1); F. Trequattrini (2); F. Craciun (1); C.Galassi (3) (literal)
- Pagina inizio
- Pagina fine
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#url
- http://www.scientific.net/SSP.184.333 (literal)
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#titoloVolume
- Internal Friction and Mechanical Spectroscopy (literal)
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#volumeInCollana
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#pagineTotali
- 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 (literal)
- Titolo
- Rhombohedral and Monoclinic Phases of PZT near the Antiferroelectric and the Morphotropic Boundaries (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 spectroscopy measurements are presented, which, together with
previous measurements [1], clarify some controversial aspects of the phase diagram of PbZr1-xTixO3
close to the border with the antiferroelectric (AFE) phase, and at the morphotropic phase boundary
(MPB). No evidence is found of a border separating monoclinic (M) from rhombohedral (R) phases,
supporting recent structural studies according to which the two phases coexist, with the fraction of
M prevailing near the MPB. A large frequency independent softening at the MPB indicates a
genuine M phase over only finely twinned R phase. A new phase transition is found in both the
anelastic and dielectric spectra at x = 0.1, at a temperature TIT between the Curie temperature TC and
the boundary TT to the phases with tilted octahedra. Such a diffuse transition is interpreted as onset
of disordered tilts, which finally become ordered below TT. In this manner, the phase diagram of
PZT is rationalised with respect to the common tendency of perovskites to undergo tilting when the
mismatch between the cation sizes exceeds a threshold. (literal)
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