[PDF] Top 20 Ferroelectric and optical properties of Ba0.8Sr0.2TiO3 thin film

... stant of 0.06 N/m. The temperature dependence of the dielec- tric constant was measured in the films in a metal- ferroelectric-metal 共MFM兲 configuration, using a HP4192A impedance/gain phase ... See full document

... Ferroelectric thin films have attracted much attention due to potential applications in nonvolatile ferroelectric ran- dom access memories ...states of ferroelectric thin ... See full document

... the film fabrication, 500W RF Sputtering unit has been used. ZnTe and CdTe targets are placed in the target holders of the RF sputtering ...bottom of the target holder and temperature ... See full document

... behavior of the thin films was observed by means of the dielectric constant versus temperature curves, which show a broad ...factor of the E(1TO) soft mode was calculated using the damped ... See full document

... free and homogeneous. To observe the pres- ence of pores, high-resolution SEM observation (100,000×) was ...4(b), and 4(c) display the micrographs obtained for the single- and multilayered ... See full document

... dependence of the dielectric constant upon the frequency does not reveal any relaxor ...tetragonal ferroelectric phase. The temperature dependency of Raman scattering spectra was investigated through ... See full document

... ions and B represents tetra-, penta- or hexa-valent ...number of stacking oxygen octahedrons along the c axis in one crystal unit cell, and is equal to ...point of about 790 °C and is ... See full document

... CdS thin films of different thicknesses were deposited onto highly pre–cleaned glass substrates using the thermal evaporation at room ...boat) and the substrate holder was about 21 cm to avoid the ... See full document

... much of the incident light since the refractive index gradient of the materials present in the solar cell stack are beneficial for anti-reflective properties [49]; ii)the absorber being thick enough ... See full document

... concept of reversible spontaneous polarization as a memory state was one of the greatest motivations since the early days of ferroelectric ...in thin film technology over the ... See full document

... influence of the morphological properties, crystallite size and roughness, on the reversible charge capacity and the respective optical responses were ...morphological properties ... See full document

... tion of polymer light emitting diodes [1] and as donor material in the fabrication of bulk-heterojunction pho- tovoltaic cells [2] because of its excellent processibility and favorable ... See full document

... Currently ferroelectric thin films are widely used in the technique as piezoelectric ...prospects of using ferroelectric materials in storage systems and elements microwave technology ... See full document

... One of the most interesting developments has been in the gas detection ...Some of those gases are inflammable and with a high explosion risk, therefore not compatible with the traditional electric ... See full document

... nonlinearities of spin coated ZnO thin film have been investigated by using single beam Z-Scan technique in the visible ...direction of the hexagonal crystal structure. The average ... See full document

... spheres兲 and in a Fourier series in the inter- stitial ...60% of the unit ...combinations of radial wave functions and their energy derivatives, computed at energies appropriate to their site ... See full document

... aim of this work is to contribute to the improvement of the efficiency of thin solar cells by increasing the efficiency of light collection in n-i-p structure solar cells based in a ... See full document

... exchange and correlation ...type of the eight atoms, yielding x ⫽0, 1/8, 2/8, ...optimization of the total energy. The basis functions, the electron densities, and the LDA po- tentials were ... See full document

... 1), and plotted with the model expression (Figure ...model and data, as the model exhibits the same behaviour at a slightly lower magnitude value for frequencies above 10 ...kHz and 10 kHz there is a ... See full document

... formation of distorted octahedral, prism, and pentagonal-pyramidal ...levels of energy, which can be directly related to the local geometries associated with Ca-centered ...eV and ‒2.28 eV is ... See full document