Elastic response of (1-x)Ba(Ti0.8Zr0.2)O-3 - x(Ba0.7Ca0.3)TiO3 (x=0.45-0.55) and the role of the intermediate orthorhombic phase in enhancing the piezoelectric coupling

Autor(en)

F. Cordero, F. Craciun, M. Dinescu, N. Scarisoreanu, C. Galassi, W. Schranz, V. Soprunyuk

Abstrakt

The elastic response of (Ba,Ca)(Ti, Zr)O-3 at compositions where the piezoelectric effect is maximized has been measured by different methods between 1 Hz and 250 kHz and compared with that of PZT at the middle of its morphotropic phase boundary. In all cases, the compliance is peaked at the border between the tetragonal (T) and the orthorhombic (O) phases, intermediate between the T and the low- temperature rhombohedral phase. The anomalies do not exhibit dependence on frequency and their relative amplitude is 200- 300 times larger than the losses, demonstrating that they are intrinsic rather than due to the domain wall motion. This also demonstrates the role of an intermediate O or monoclinic phase in enhancing the transverse instability and piezoelectric coupling at a (morphotropic) phase boundary between R and T phases.

Organisation(en)

Physik Funktioneller Materialien

Externe Organisation(en)

Università degli Studi di Roma "Tor Vergata", National Institute for Laser, Plasma and Radiation Physics, Consiglio Nazionale delle Ricerche

Journal

Applied Physics Letters

Band

105

Anzahl der Seiten

5

ISSN

0003-6951

DOI

https://doi.org/10.1063/1.4903807

Publikationsdatum

12-2014

Peer-reviewed

Ja

ÖFOS 2012

103018 Materialphysik

Schlagwörter

ASJC Scopus Sachgebiete

Physics and Astronomy (miscellaneous)

Link zum Portal

https://ucrisportal.univie.ac.at/de/publications/1e0ce35a-fa57-4bc0-bc98-618b677745ff