TY - JOUR
T1 - Non-stoichiometry and its implications for the properties of PMN-PT thin films
AU - Trstenjak, Urška
AU - Daneu, Nina
AU - Belhadi, Jamal
AU - Samardžija, Zoran
AU - Matavž, Aleksander
AU - Bobnar, Vid
AU - Koster, Gertjan
AU - Spreitzer, Matjaž
N1 - Funding Information:
The authors would like to thank Damjan Vengust for synthesis of the PLD targets, David Fabijan for the dielectric and ferroelectric measurements and Bojan Ambrožič for FIB sample preparation. This research was financed by the Slovenian Research Agency (grant numbers P2-0091, N2-0187, N2-0149, J2-2510, and J2-1740).
Publisher Copyright:
© 2023 The Royal Society of Chemistry.
PY - 2023/1/21
Y1 - 2023/1/21
N2 - 0.67[Pb(Mg1/3Nb2/3)O3]-0.33[PbTiO3] (PMN-33PT) epitaxial thin films were prepared by pulsed-laser deposition (PLD) using ceramic targets, enriched with PbO (and MgO). The phase composition and crystal structure were analyzed by high-resolution X-ray diffraction. Accurate chemical analysis of the thin films was carried out using wavelength-dispersive X-ray spectroscopy, which revealed that the target-substrate material transfer is not fully stoichiometric. The largest deviations were found for Pb and Mg content. Our results show that it is possible to effectively tune the stoichiometry of the films via the use of custom-made ceramic targets, emphasizing their advantage over single-crystal targets in PLD growth of complex metal oxides. The functional response of the films, however, is the result of complex interactions between the crystal structure, microstructure and chemical composition of the films. Our results show that the sample, prepared from the target with 20 mol% PbO excess, with the largest deviations from the nominal stoichiometry, exhibits the highest longitudinal piezoelectric coefficient.
AB - 0.67[Pb(Mg1/3Nb2/3)O3]-0.33[PbTiO3] (PMN-33PT) epitaxial thin films were prepared by pulsed-laser deposition (PLD) using ceramic targets, enriched with PbO (and MgO). The phase composition and crystal structure were analyzed by high-resolution X-ray diffraction. Accurate chemical analysis of the thin films was carried out using wavelength-dispersive X-ray spectroscopy, which revealed that the target-substrate material transfer is not fully stoichiometric. The largest deviations were found for Pb and Mg content. Our results show that it is possible to effectively tune the stoichiometry of the films via the use of custom-made ceramic targets, emphasizing their advantage over single-crystal targets in PLD growth of complex metal oxides. The functional response of the films, however, is the result of complex interactions between the crystal structure, microstructure and chemical composition of the films. Our results show that the sample, prepared from the target with 20 mol% PbO excess, with the largest deviations from the nominal stoichiometry, exhibits the highest longitudinal piezoelectric coefficient.
UR - http://www.scopus.com/inward/record.url?scp=85145916717&partnerID=8YFLogxK
U2 - 10.1039/d2tc04070k
DO - 10.1039/d2tc04070k
M3 - Article
AN - SCOPUS:85145916717
SN - 2050-7526
VL - 11
SP - 1144
EP - 1154
JO - Journal of materials chemistry C
JF - Journal of materials chemistry C
IS - 3
ER -