Gallium oxide (Ga2O3) thin films were made by sputter deposition employing a Ga2O3 ceramic target for sputtering. The depositions over wide range of substrate temperatures (Ts), from 25 to 600 °C. effect Ts on the chemical bonding, surface morphological characteristics, optical constants, and electrical properties grown was evaluated using X-ray photoelectron spectroscopy (XPS), atomic force microscopy (AFM), spectroscopic ellipsometry (SE), four-point probe measurements. XPS analyses...

In the current investigation, an innovative time-domain damage index is introduced for first time which based on local statistical features of waveform. This called 'normalized correlation moment' (NCM) and composed nth moment cross-correlation baseline comparison waves. The performance this novel compared some synthetic signals with that existing Pearson coefficient (signal difference coefficient, SDC). proposed shown to have significant advantages over SDC, including sensitivity...

Epitaxial BiFeO3 thin films have been grown on (100)-oriented SrTiO3 and Nb-doped substrates using the pulsed laser deposition technique under identical thermodynamic variable kinetic conditions. The variation of growth kinetics through fluence pulse repetition rate had minimal effect structure magnetic properties films. However, large changes were observed in microstructure, with initial island mode approaching toward step-flow type roughness reducing from 12.5 to 1.8 nm for 50 thick film....

We report a technique to prepare top and bottom oxide electrodes of LaNiO3 (LNO) for lead zirconate titanate (PZT) films using chemical solution deposition. LNO/PZT/LNO sandwich structures were prepared on platinized silicon by spin coating combined with rapid thermal annealing. Pt dots sputtered film serve as protective masks during etching the uncovered layer dilute hydrochloric acid. For comparison, Pt/PZT/Pt capacitors also same processing conditions. Electrical measurements carried out...

Photovoltaic properties of Pb0.95La0.05Zr0.54Ti0.46O3 thin film capacitors prepared using solution based method with metal top electrodes having different work functions are investigated in this work. It is shown that by aluminum, a low work-function metal, as electrode, the magnitude photo voltage well current can be enhanced. More than one enhancement photovoltaic efficiency observed Al electrode compared to Pt electrodes. This clearly highlights an appropriate choice function enhance...

Pb ( Nb 0.02 Zr 0.2 Ti 0.8 ) O 3 thin films with thickness of 900nm were spincoated on platinized silicon substrate using the sol–gel method. X-ray diffraction and field emission scanning electron microscopy show that are highly a-axis-oriented columnar structure. A large remnant polarization (Pr+) ∼92.2μC∕cm−2 was observed for as-grown films. The coercive (Ec+) these 159.3kV∕cm. Good pyroelectric properties obtained as a result spontaneous their strong temperature dependence. coefficient...

The effect of Pb content and solution concentration lead titanate (PbxTiO3) seed layer on the texture electric properties Pb1.1(Zr0.52,Ti0.48)O3 (PZT) thin films was investigated. A variety layers (y PbxTiO3) with varying = 0.02, 0.05, 0.1, 0.2 M) (x 1.0, 1.05, 1.1, 1.2) deposited Pt/TiO2/SiO2/Si substrates using chemical-solution deposition method. PZT were then these same process. X-ray diffraction (XRD) photoelectron spectroscopy investigations confirm change in crystal structure...

Films of ferroelectric antimony sulphoiodide (SbSI) were grown on platinized silicon substrates by pulsed laser deposition (PLD). The films at room temperature and later annealed 200-250 C in air for crystallinity. Curie (T ) these was 17-21 C, whereas the peak dielectric constant up to 5000. These showed nonzero remnant polarization above T a 40 low leakage current density around 10 m 6 A/cm 2 2V. SbSI integrated with colossal magnetoresistive La 0.67 Ca 0.33 MnO 3 (LCMO) thin film, which...

A critical part of structural health monitoring is accurate detection damages in the structure. This paper presents results two multi-class damage and identification approaches based on classification using Support Vector Machine (SVM) Artificial Neural Networks (ANN). The article under test was a fiber composite panel modeled by Finite Element Model (FEM). Static strain data were acquired at 6 predefined locations mixed with Gaussian noise to simulate performance real sensors. Strain then...

Vibratory gyroscopes measure the angular velocity of a system by making use Coriolis effect. We have proposed new design using double-sided piezoelectric Nb-doped Pb(Zr20, Ti80)O3 films for actuation as well sensing rate gyroscope. This has potential to increase resolution device increasing mass gyro, that is, produce meso-scale gyro MEMS technology. Further, it could output signal amplitude generating higher force, since PNZT exhibit values effective transverse and longitudinal coefficients...

Effect of Nb doping in the range 0∼4 at% on 1 μm thick highly {100}-textured Pb1.1(Zr0.52,Ti0.48)O3 films has been investigated. Texturing {100} as high 97% is obtained for all due to incorporation a few nanometers Pb1.05TiO3 seeding layer. Overall, maximum polarization, remanent squareness, and coercivity decrease with level. The PZT film 3% shows effective transverse piezoelectric coefficient −e 31,f 12.9 C/cm2, which 5∼15% higher than those other levels.

The purpose of this work was to develop a low-cost gyroscope for general aviation. supported by FAA fulfill their goal replacing all or part ground based navigation aviation which could help overcome the difficulties related GPS failures. To achieve researchers are focusing on MEMS technology. We propose new design should increase accuracy increasing mass gyro, that is, produce meso-scale gyro using technology and signal amplitude piezoelectric actuators sensors (instead conventional...

In the electrical and computer engineering (ECE) curriculum at The University of Alabama, freshmen are introduced to fundamental concepts units, DC circuit analysis techniques, operational amplifiers, simulation, design, professional ethics. two credit course has both lecture laboratory components that address these topics. been used, in this project, provide students an experience design. one assignments, work teams design build products giving attention function aesthetics. Creativity is...

Abstract Thin films of lanthanum modified lead zirconate titanate with chemical formula (Pb0.95La0.05Zr0.54Ti0.46O3) were prepared using spin coating method. The sol for the PLZT was in house by metal organic decomposition (MOD) technique. annealed temperature range 550–750°C a rapid annealing furnace flowing oxygen to promote crystallinity films. Effect post deposition temperatures on structure/morphology and ferroelectric properties examined X-ray diffraction, atomic force microscopy...

Thin films of Pb0.95La0.05Zr0.54Ti0.46O3 were prepared using chemical solution method. The photovoltaic response the under dark and illuminated conditions was investigated capacitor type devices with Pt as top bottom electrodes. results show that open circuit voltage short current a cell can be manipulated by controlling post deposition annealing temperature films. Films annealed at 750°C seen to exhibit highest 15.83 nA. influence illumination on properties such capacitance, ferroelectric...

We report the effects of illumination on ferroelectric and photovoltaic properties Pb0.95La0.05Zr0.54Ti0.46O3 (PLZT) thin film based asymmetric metal/ferroelectric/metal capacitor structure, using Au as a top electrode Pt bottom electrode. Conductive-AFM (atomic force microscopy) measurements demonstrate evolution charge carriers in PLZT films illumination. The capacitance-voltage, polarization-electric field, leakage current-voltage characteristics Au/PLZT/Pt are discussed under dark...