Power consumption is a critical concern of many sensors used in diversified applications, especially where the replacement of batteries is impossible or inconvenient. Strain energy harvesting technique is an attractive approach to solve this problem using piezoelectric materials. The feasibility of a self-powered piezoelectric microaccelerometer system using lead zirconate titanate (PZT) thin f...

Resonant modes and magnetoelectric performance of layered PZT/Ni and Ni/PZT/Ni cylindrical composites are considered. The first and the second resonant frequencies in the 1–150 kHz range correspond to the axial and the radial modes. Experimental results and theoretical analysis indicate that one should choose the trilayered structure and the first resonant frequency as the working frequency. Th...

To fundamentally solve the bottleneck of Von Neumann’s computing architecture, a neuromorphic thin-film transistor (NTFT) employing Pb(Zr, Ti)O3 (PZT) was investigated. The indium gallium zinc oxide (IGZO) channel back gate TFT structure chosen to diffusion atoms that form layer during annealing process for crystallization PZT. A post-deposition with IGZO after PZT and using an oxide-based mate...

Introduction An ever increasing need for data storage and a escalating demand of small computing machines have led to the development of Hard Disk Drives (HDDs) towards extremely high recording density and reduced form factors. The requirement of diminutive Tracks-Per-Inch (TPI) in HDDs has necessitated the use of dual-stage actuator for fine positioning of Read/Write (R/W) head as well as expa...

Piezoelectric ceramics have traditionally been used in commercial applications such as actuators and sensors. By far the most popular piezoceramics currently in use are Pb(Zr,Ti)O3-based (PZT) ceramics. PZT ceramics are able to produce large strain and polarization with the application of an electric field, and this is due to the Morphotropic phase boundary (MPB). A MPB is associated with the b...

X-ray absorption fine structure (XAFS) experiments were carried out on a series of ferroelectric materials PbZr1−xTixO3 (PZT) sx=0.40,0.47,0.49,0.55d to study the local structure around Ti and Zr atoms in each sample. Based on the fact that PZT has a single phase in the morphotropic phase boundary (MPB) from the x-ray diffraction measurements, both extended XAFS (EXAFS) and x-ray absorption nea...

Piezoelectric ceramic Lead Zirconate Titanate (PZT) transducers, working on the principle of electromechanical impedance (EMI), are increasingly applied for structural health monitoring (SHM) in aerospace, civil and mechanical engineering. The PZT transducers are usually surface bonded to or embedded in a structure and subjected to actuation so as to interrogate the structure at the desired fre...

Microaccelerometers using piezoelectric lead zirconate titanate (PZT) thin films have attracted much interest due to their simple structure and potentially high sensitivity. In this paper, we present a theoretical model for a microaccelerometer with four suspended flexural PZT-on-silicon beams and a central proof mass configuration. The model takes into account the effect of device geometry and...

The equilibrium polarization states and physical properties of single-domain Pb(Zr12xTix)O3 ~PZT! thin films epitaxially grown on dissimilar cubic substrates have been examined by a nonlinear thermodynamic theory. In contrast to the former theoretical studies of PZT films, the two-dimensional straining and clamping of a film by a thick substrate is correctly taken into account in the reported c...

Hydrothermal synthesis is an attractive method for the deposition of ferroelectric thin films because it can realize a low processing temperature of 200 °C or less. In this study, micron-sized PbZr12xTixO3 ~PZT! single crystals and thin films were fabricated on a Ti substrate at 160 °C by hydrothermal synthesis. The ferroelectricity of the crystals was investigated using local piezoresponse hys...