Ferroelectric domains in PbTiO3/SrTiO3 superlattices

Zubko, Pavlo (DPMC, University of Geneva, Geneva, Switzerland) ; Jecklin, Noemie (DPMC, University of Geneva, Geneva, Switzerland) ; Stucki, Nicolas (School of Engineering, Architecture and Landscape (hepia), HES-SO // University of Applied Sciences Western Switzerland) ; Lichtensteiger, Céline (DPMC, University of Geneva, Geneva, Switzerland) ; Rispens, Gijsbert (DPMC, University of Geneva, Geneva, Switzerland) ; Triscone, Jean-Marc (DPMC, University of Geneva, Geneva, Switzerland)

Polydomain superlattices composed of ferroelectric PbTiO3 and paraelectric SrTiO3 were investigated by means of temperature-dependent X-ray diffraction and electrical measurements. The ferroelectric nanodomains were found to have an almost isotropic distribution of domain wall alignments and to be highly responsive to applied electric fields, giving rise to large enhancements in the overall dielectric response of the structure. Electrical measurements revealed a dramatic dependence of the dielectric permittivity, tunability, and polarization-voltage characteristics on the superlattice period. For short-period superlattices, double hysteresis loops were observed.


Keywords:
Article Type:
scientifique
Faculty:
Ingénierie et Architecture
School:
HEPIA - Genève
Institute:
inSTI - Institut des Sciences et Technologies industrielles
Date:
2012-09
Pagination:
11 p.
Published in:
Ferroelectrics
Numeration (vol. no.):
2012, vol. 433, no. 1, pp. 127-137
DOI:
ISSN:
0015-0193
Appears in Collection:



 Record created 2020-04-03, last modified 2020-10-27

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