Large piezoelectric strain with ultra-low strain hysteresis in highly c-axis oriented Pb(Zr_0.52Ti_0.48)O₃ films with columnar growth on amorphous glass substrates.

ABSTRACT: Thin films of PbZr₀.₅₂Ti₀.₄₈O₃ (PZT) with largely detached columnar grains, deposited by pulsed laser deposition (PLD) on amorphous glass substrates covered with Ca₂Nb₃O₁₀ nanosheets as growth template and using LaNiO₃ electrode layers, are shown to exhibit very high unipolar piezoelectric strain and ultra-low strain hysteresis. The observed increase of the piezoelectric coefficient with increasing film thickness is attributed to the reduction of clamping, because of the increasingly less dense columnar microstructure (more separation between the grains) with across the film thickness. A very large piezoelectric coefficient (490 pm/V) and a high piezoelectric strain (~0.9%) are obtained in 4-

SUBMITTER: Nguyen MD 

PROVIDER: S-EPMC5635137 | biostudies-literature | 2017 Oct

REPOSITORIES: biostudies-literature