PVDF–HFP/PZT nanocomposite thin films: preparation, structure and piezoelectric properties Khadija Oumghar, Nabil Chakhchaoui, Mohamed Assal, Adil Eddiai, Mounir El Achaby, Mounir Meddad, Omar Cherkaoui and M'hamed Mazroui Eur. Phys. J. Appl. Phys., 97 (2022) 88 Published online: 21 December 2022 DOI: 10.1051/epjap/2022220111