The ferroelectric switching characteristics of a vinylidene fluoride and trifluoroethylene copolymer were significantly changed via the chemical modification of a gold electrode with an alkanethiol self-assembled monolayer (SAM). The alkanethiol SAM-Au electrode successfully suppressed the leakage current (dark current) from the electrode to the bulk ferroelectric. Smaller leakage currents led ...

Ceramic materials have many striking prospects as temperature sensors. Still, some inevitable shortcomings comprising toxicity, low biocompatibility, extensive response well recovery times, poor sensitivity, and hysteresis obstruct them from various progressive uses. Therefore, in this current exploration, a capacitive sensor has been designed developed using lead-free ferroelectric ceramic Bi(...

Novel ferromagnetic-dielectric particulate composites of Ni0.5Zn0.5Fe1.95O4−δ (NZF) and PbZr0.52Ti0.48O3 (PZT) were prepared by conventional ceramic method. The presence of two phases in composites was confirmed by XRD technique. The variations of dielectric constant (ε) with frequency in the range of 100 kHz–1MHz at room temperature and also with temperature at three different frequencies (50 ...

The discovery of the piezoelectric properties of poly(vinylidene fluoride) (PVDF) by Kawai [Kawai, 1969], and the study of its pyroelectric and nonlinear optical properties [Bergman et al., 1971; Glass, 1971] led to the discovery of its ferroelectric properties in the early 1970s. Since that time, considerable development and progress have been made on both materials and devices based on PVDF. ...

Control of charge carrier distribution in a gated channel via a dielectric layer is currently the state of the art in the design of integrated circuits such as field effect transistors. Replacing linear dielectrics with ferroelectrics would ultimately lead to more energy efficient devices as well as the added advantage of the memory function of the gate. Here, we report that the channel-off/cha...

The spontaneous electrical polarization of ferroelectric materials can be changed either by reversal or by phase transition from a ferroelectric into a non-ferroelectric state or vice versa. If spontaneous polarization changes are induced with fast heat, mechanical pressure, laser or electric field pulses on a submicrosecond time scale, strong uncompensated surface charge densities and related ...

Whcn 'Manzanillo' olive cmbryos were cxciscd al successivc dates and cultured 011 one¡hiTd strenglh Murashige-S koog medium. three Slagcs of diffcring growlh potential were observed: 1) An inllial stagc in which no germination was obtained. 2) An intermediate 'c riticar period in which germination and viabil ilY percenlage illcrcased according 10 date ,me! 3) A final stage. fram Ihe lime whcll ...

Mixed-oxides and the coprecipitation procedure were used to prepare PLZT x/65/35 powders. Transparent samples were obtained by hot-pressing. The influence of processing parameters on the microstructure and electrical properties was studied.

Lead-based electro-ceramic compositions are excellent energy storage materials used for high-energy density applications in dielectric ceramic capacitors. However, these have lead contents their compositions, making them toxic, with a negative impact on human health and the environment. For this reason, we synthesized lead-free bismuth-based perovskite, 0.80(0.92Bi1/5Na1/5TiO3-0.08BaTiO3)-0.20(...