Functional properties of donor- and acceptor-co-doped high dielectric constant zinc oxide ceramics

Abstract

In this work we investigated the functional properties of a set of acceptor (Cu1+) and donor (Gd3+) codoped wurtzite ZnO ceramics Zn(1−x)(CuzGdy)xO for x = 0.01 synthesized by the pressure-less solid state sintering method.

Optical and functional properties of hydrothermally synthesized tetragonal Ba0.4Cu0.6−xLaxTiO3 (x = 0.2–0.6) nanoparticles

“…It was very much clear from figure 9. The similar trend was reported by the previous scientists in the literature [37][38][39][40][41][42][43][44][45][46]. In addition, the frequency dependence of ε′ as well as ε″ plots revealed the non-Debye type relaxations over the frequency range from 4 to 5 MHz.…”

“…The frequency of A-site was noticed to be decreasing from 694.63 to 678. 45 Herein, the first three frequencies were associated to the bending vibrations of oxygen and hydrogen. These were acquired due to the OH-absorbed the BCLT ceramic nanoparticles [1].…”

Unraveling the effect of Gd doping on the structural, optical, and magnetic properties of ZnO based diluted magnetic semiconductor nanorods

“…Upon additional increase in dopant concentration, the crystal lattice expands owing to the substitution of Zn atoms in the core due to relatively large ionic radii of Gd 3+ ion. The contraction trends of c parameter upon Gd doping has also been reported by Flemban et al 56 and e Silva et al 69 The substitution of Zn 2+ in the tetrahedral site of the ZnO host lattice by Gd 3+ ions will cause lattice distortion. The perfect wurtzite structure has a hexagonal unit cell with two lattice constants, a and c, with a ratio of c/a ¼ 1.633.…”

Insights into the Dielectric Loss Mechanism of Bianisotropic FeSi/SiC Composite Materials

“…The resonance phenomenon is said to happen if the magnitude of the 1 – γ term exceeds the value of unity. To fit the dielectric data of the composite material, the eq 2 is extended to its trigonometric form as 28 …”