0.27Y2O3-BST ceramics is of dielectric constant>110,000 and loss<0.15 in40–140°C.Unipolar charge in semiconductive grain plays a major contribution.XPS result confirms a state of e-Ba2+, the site responsible for electron hopping.doi:10.1016/j.matchemphys.2013.09.053Wan Q. Cao...
The dielectric constant of the Y-stabilized zirconia, Zr .894Y .095Hf .011O 1.95, was determined to be 28.6 ± 0.2 at 1 MHz using a two-terminal method and empirically determined edge corrections. The dielectric polarizability of ZrO 2 derived from dielectric constants of several Zr compounds...
Measurement results show the dielectric constant and dissipation factor of varistors are affected by the doping ratio of yttrium oxide, and the decrement of dielectric constant as the Y2O3 addition increasing could be attributed to the internal boundary layer capacitance (IBLC) effect. Meanwhile, the ...
Y2O3-Dy2O3烧结特性显微结构热导率The effects of Dy2O3 on the phase composition, microstructure, and the dielectric property, especially, dielectric constant, of AlN ceramics sintered at low-temperature (1650oC), were investigated systematically. X-ray diffraction (XRD) was employed to indentify the ...
Evidence of four woodland species suggested that regional abundance affected the probability of occurrence in small isolates. 展开 关键词: Theoretical or Mathematical/ anodisation anodised layers dielectric thin films electric strength permittivity/ insulating oxides dielectric strength dielectric constant ...
The frequency dependence of dielectric constant (εr), dielectric loss (tanδ) and AC conductivity of pure and rare earth doped ZnO were calculated and well explained with Maxwell-Weigner model. 展开 关键词: Solid State Reaction XRD Crystallite Size Bond Length Dielectric Constant AC Conductivity ...
Dielectric spectroscopy of polyaniline–Dy2O3 compositesDielectric spectroscopy of polyaniline–Dy2O3 compositesAC conductivityDielectric constantPolyanilineDy 2O 3Insitu polymerization of aniline was carried out in the presence of dysprosium oxide (Dy 2O 3) to synthesize Polyaniline (PANI)–Dy 2O 3 comp...
Oxygen vacancies in high dielectric constant oxides La[sub 2]O[sub 3], Lu[sub 2]O[sub 3], and LaLuO[sub 3] This paper presents first principles calculations of the energy levels of the oxygen vacancy in La 2O 3, Lu 2O 3 and LaLuO 3. The levels lie above the Si g... K Xio...
However, it can be expected that the electron exchange between Fe3+ and Fe2+ will be dominating in SCFO due to the large atomic ratio of Fe in SCFO12,13. Dielectric permittivity analysis. Figure 3 shows the frequency dependent dielectric constant ε′ and dielectric loss ε″ ...
OnchangingdieIectrictemperaturedependenceOftheBaTi 3 dieIectricceramicsisdiscussed.Theex perimentaIcOmparisOnshOwsthatDy 2 3 dOpingcaninhibitgraingrOwthOfBaTi 3 ,whereasLa 2 3 dOpinghasmOrecOnsiderabIeeffecttOshift anddepressCuriepeakOfBaTi 3 .ThedieIectricceramicswithhighdieIectriccOnstant( "" 3000),IO...