Piezoelectric properties of PbTiO3 thin films characterized with piezoresponse force and high resolution transmission electron microscopy

Abstract

In this paper we investigate the piezoelectric properties of PbTiO3 thin films grown by pulsed laser deposition with piezoresponse force microscopy and transmission electron microscopy. The as-grown films exhibit an upward polarization, inhomogeneous distribution of piezoelectric characteristics concerning local coercive fields, and piezoelectric coefficient. In fact, the data obtained reveal imprints during piezoresponse force microscopy measurements, nonlinearity in the piezoelectric deformation, and limited polarization reversal. Moreover, transmission electron microscopy shows the presence of defects near the film/substrate interface, which can be associated with the variations of piezoelectric properties.

Magnetoelectric Interactions in Lead-Based and Lead-Free Composites

“…According to our estimates, d 31 = −11 × 10 12 m/V, d 33 = 22 × 10 12 m/V, ε 33 /ε 0 = 75, Р 3 = 1.5 С/m 2 . Experimentally measured piezoelectric coefficient is equal d 33 = 25 × 10 12 m/V [ 142 ] that is in agreement with calculated data.…”

Engineering 180° ferroelectric domains in epitaxial PbTiO3 thin films by varying the thickness of the underlying (La,Sr)MnO3 layer

“…Stripes of 180 domains have been reported for thin films of PbTiO 3 (PTO, i.e., PZT for x ¼ 0) grown on the STO substrate, 15,16 whereas the film exhibits a monodomain state when a SrRuO 3 or (La,Sr)MnO 3 layer was used as bottom electrode. 10,12 To reduce the depolarization field, fluxclosure domains form in the area between 180 domain wall (DW) of PZT and insulating STO substrate, and have been studied with a precision of a few picometers by applying negative spherical aberration (Cs) imaging. 11 The physical properties and structures of DWs in ferroelectrics and multiferroics have been studied theoretically [17][18][19][20][21] and experimentally 11,[22][23][24][25][26][27][28][29] in great detail.…”