M. Kevin Nadaud

Tél

0247361579

Mail

kevin.nadaud@univ-tours.fr

Electronique, optronique et systèmes

Electronic, instrumentation, sensors.

My research are focused on the electrical and piezoelectric characterizations of functional material, especially ferroelectric material and wideband gap material.

Instrumentation

Impedance spectroscopy and ferroelectric measurements on thin films

• few Hz to 10 GHz
• up to 200 V DC
• manual probe station [80 K to 450 K]
• automated probe station [220K to 450K]

Piezoelectric measurements on thin films:

• dual beam laser interferometer
• automated probe station

Key publications

• K. Nadaud, G. F. Nataf, N. Jaber, M. Bah, B. Negulescu, P. Andreazza, P. Birnal et J. Wolfman, « Subcoercive field dielectric response of 0.5(Ba_0.7Ca_0.3TiO₃) – 0.5 (BaZr_0.2Ti_0.8O₃) thin film : Peculiar third harmonic signature of phase transitions and residual ferroelectricity », Applied Physics Letters 124, 042901 (2024).
• K. Nadaud, C. Borderon, R. Renoud, M. Bah, S. Ginestar et H. W. Gundel, « Metastable and field induced ferroelectric response in antiferroelectric lead zirconate thin film studied by the hyperbolic law and third harmonic response », Journal of Applied Physics 133, 10.1063/5.0143659 (2023).
• K. Nadaud, M. Sadl, M. Bah, F. Levassort et H. Ursic, « Effect of thermal annealing on dielectric and ferroelectric properties of aerosol-deposited 0.65 Pb(Mg_1/3Nb_2/3 )O₃ – 0.35 PbTiO₃ thick films », Applied Physics Letters 120, 112902 (2022).
• M. Bah, T. S. Tlemcani, S. Boubenia, C. Justeau, N. Vivet, J.-M. Chauveau, F. Jomard, K. Nadaud, G. Poulin-Vittrant et D. Alquier, « Assessing the electrical activity of individual ZnO nanowires thermally annealed in air », Nanoscale Advances 4, 1125-1135 (2022).
• C. Borderon, A. E. Brunier, K. Nadaud, R. Renoud, M. Alexe et H. W. Gundel, « Domain wall motion in Pb(Zr_0.20Ti_0.80)O₃ epitaxial thin films », Scientific Reports 7, 10.1038/s41598-017-03757-y (2017).

Invited Talk

• K. Nadaud, Ferroelectric domain wall motions characterization using impedance spectroscopy and harmonics analysis, Orléans, 2023.
• G. Poulin-Vittrant, K. Nadaud, A. S. Dahiya, F. Morini, C. Justeau, S. Boubenia et D. Alquier, Challenges of low-temperature synthesized ZnO nanostructures and their integration into nanosystems, Warsaw, Poland, 2018.
• K. Nadaud, G. Poulin-Vittrant, A. S. Dahiya, F. Morini, C. Justeau, S. Boubenia et D. Alquier, Flexible and Stretchable Piezoelectric Generators Based on Low Temperature Grown ZnO Nanowires, Singapore, 2018.