| People | Locations | Statistics |
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| Naji, M. |
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| Motta, Antonella |
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| Aletan, Dirar |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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| Kononenko, Denys |
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| Petrov, R. H. | Madrid |
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| Alshaaer, Mazen | Brussels |
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| Bih, L. |
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| Casati, R. |
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| Muller, Hermance |
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| Kočí, Jan | Prague |
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| Šuljagić, Marija |
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| Kalteremidou, Kalliopi-Artemi | Brussels |
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| Azam, Siraj |
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| Ospanova, Alyiya |
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| Blanpain, Bart |
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| Ali, M. A. |
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| Popa, V. |
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| Rančić, M. |
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| Ollier, Nadège |
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| Azevedo, Nuno Monteiro |
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| Landes, Michael |
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| Rignanese, Gian-Marco |
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Guennou, Mael
University of Luxembourg
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (17/17 displayed)
- 2023Strain engineering of the electro-optic effect in polycrystalline BiFeO3 filmscitations
- 2023Strain engineering of the electro-optic effect in polycrystalline BiFeO3 films [Invited]citations
- 2022Birefringence induced by antiferroelectric switching in transparent polycrystalline PbZr0.95Ti0.05O3 filmcitations
- 2021Patterning enhanced tetragonality in BiFeO3 thin films with effective negative pressure by helium implantationcitations
- 2021Crossover between distinct symmetries in solid solutions of rare earth nickelatescitations
- 2021Crossover between distinct symmetries in solid solutions of rare earth nickelatescitations
- 2020Mesoporous TiO2 anatase films for enhanced photocatalytic activity under UV and visible lightcitations
- 2020Optical studies of ferroelectric and ferroelastic domain walls
- 2020Optical studies of ferroelectric and ferroelastic domain wallscitations
- 2020Controlling electrical and optical properties of zinc oxide thin films grown by thermal atomic layer deposition with oxygen gascitations
- 2020Vibrational properties of LaNiO3 films in the ultrathin regimecitations
- 2018Effect of optical damage resistant dopants on the dielectric properties of LiNbO 3 :Insight from broadband impedance spectroscopy and Raman scatteringcitations
- 2017Control of surface potential at polar domain walls in a nonpolar oxidecitations
- 2014Jahn-Teller, Polarity, and Insulator-to-Metal Transition in BiMnO3 at High Pressurecitations
- 2010Intrinsic effect of Mn doping in PZN-12%PT single crystalscitations
- 20082T domain-engineered piezoelectric single crystals Calculations and application to PZN-12%PT poled along [101]citations
- 2007Modifying structural and electromechanical properties of piezoelectric PZN-xPT single crystals: domain engineering and manganese doping
Places of action
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thesis
Modifying structural and electromechanical properties of piezoelectric PZN-xPT single crystals: domain engineering and manganese doping
Abstract
Pb(Zn1/3Nb2/3)1-xTixO3 (PZN-xPT) single crystals exhibit for x = 9% the best piezoelectric properties known to date. In this work, these properties are studied in relation with the crystal structures and ferroelectric domain states of crystals with composition x = 7, 9 and 12%.<br /><br />First of all, the domain states obtained for various compositions and different electric field strengths and directions are characterized by means of permittivity measurements as a function of temperature. Notably, the instability of the single domain state 1T in tetragonal PZN-12%PT for plates thinner than 300 microns is evidenced and confirmed by XRD.<br /><br />The second part is devoted to domain engineering in PZN-12%PT poled long [101]. Measurements of the full electromechanical tensor describing the intrinsic properties as well as observations of multidomain crystals by polarized light microscopy are presented. A model is developed that takes into account clamping effects in the multidomain crystal and yields analytical expressions for its effective properties. This model satisfactorily accounts for the observed extrinsic decrease of the transverse dielectric constants.<br /><br />The third part focuses on crystals doped with manganese. The effects of doping are found to be similar to what is known for classical piezoelectric materials (hardening, increase of the mechanical quality factor, decrease of permittivity and piezoelectric coefficients) but seemingly correspond to a modification of the intrinsic rather than extrinsic contributions. Moreover, it is shown that doping destabilizes the single domain state 1O in PZN-7%PT and in contrast stabilizes the 1R state in PZN-9%PT.