نتایج جستجو برای: calcium zirconate
تعداد نتایج: 168329 فیلتر نتایج به سال:
Antiferroelectric lead zirconate is the key ingredient in modern ferroelectric and piezoelectric functional solid solutions. By itself it offers opportunities in new-type non-volatile memory and energy storage applications. A highly useful and scientifically puzzling feature of this material is the competition between the ferro- and antiferroelectric phases due to their energetic proximity, whi...
Ferroelectric lead zirconate titanate Pb(Zr,Ti)O3 (PZT) films were deposited on ITO/glass substrates by chemical solution deposition (CSD) technique with processing temperature below the grass-transition point. (100)c-oriented PZT successfully grown buffer layer of calcium niobate Ca2Nb3O10 nanosheets (ns-CN), together enhanced crystallinity increasing PbTiO3 content in PbZrO3–PbTiO3 system, i....
In reducing the high operating temperatures (≥800 °C) of solid-oxide fuel cells, use of protonic ceramics as an alternative electrolyte material is attractive due to their high conductivity and low activation energy in a low-temperature regime (≤600 °C). Among many protonic ceramics, yttrium-doped barium zirconate has attracted attention due to its excellent chemical stability, which is the mai...
In this paper, a method to calculate the dynamic stress concentration around triangular defect of piezoelectric material under electroelastic coupling is studied and applied promising barium calcium zirconate titanate. Firstly, governing equation decomposed by decoupling technique, analytical solutions elastic wave field electric are obtained function expansion method. Then, conformal transform...
This work describes the application of two different test structures to execute broadband microwave measurements of the dielectric constant of ceramic thin films. Coplanar waveguide probes and vector network analyzer were used to measure the dielectric constant versus frequency of thin films of lead zirconate titanate and zirconium titanate, fabricated by sol gel methods. One-step lithography w...
Herein we detail the synthesis and characterisation of a series of zirconium compounds featuring the bis(amido)silyl ligand [(i)Pr2Si(NDipp)2](2-) (Dipp = 2,6-diisopropylphenyl). The functionalisation of bis(amido)silyl zirconium halide complexes with a variety of nucleophiles, such as LiNMe2, LiBH4 and MeLi, was explored and the resulting products showed a propensity to form anionic zirconate ...
The frequency dependent ac conductivity and permittivity of porous lead zirconate titanate ceramic with the pore volume filled with water are shown to match the simulated electrical response of a large network of randomly positioned resistors and capacitors. Anomalous power law dispersions in conductivity and permittivity are shown to be an electrical response characteristic of the microstructu...
Single-crystalline thin films of complex oxides show a rich variety of functional properties such as ferroelectricity, piezoelectricity, ferro and antiferromagnetism and so on that have the potential for completely new electronic applications. Direct synthesis of such oxides on silicon remains challenging because of the fundamental crystal chemistry and mechanical incompatibility of dissimilar ...
In this paper, the calculation method of dynamic stress concentration around piezoelectric ceramics containing regular n-sided holes under action electroelastic coupling wave was studied, and it applied to promising barium calcium zirconate titanate material. First, governing equations were decomposed by using auxiliary function method, solution forms elastic field electric obtained expansion m...
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