Phase transition in Pb4.8Ca0.2Ge3O11 ferroelectrics

Effect of rare earth radius and concentration on the structural and transport properties of doped Mn–Zn ferrite

“…3a-f correlates the real part of (e 0 ) and the absolute temperature at different frequencies ranging from 100 kHz to 5 MHz for the investigated samples. The figure shows clearly that for all samples (e 0 ) increases with increasing temperature and decreases with increasing frequency, which is the general trend for all ferrite samples [10][11][12][13].…”

Ultrahigh capacitive energy storage in highly oriented Ba(ZrxTi1-x)O3 thin films prepared by pulsed laser deposition

“…22,23 It can be seen that the Bragg peak positions shift towards lower angles with an increase in % Zr content suggestive of an increase in the crystal unit cell size with the increase in Zr content incorporation as Zr is having an ionic radius of 0.98 Å greater than that of Ti, 0.72 Å. Raman-active optical modes for BaTiO 3 in the tetragonal phase with 4 spacegroup are 3 24 The room temperature Raman spectrum of all BZT compositions displayed in Fig.S3 shows broad and mixed phonon modes at 160 cm -1 dielectric behavior has been found in many ferroelectric ceramics. 26,27 We obtained a higher dielectric constant for BZT30 than for BZT40 and BZT50, this may be because of the microregions in BZT30 contributing to the rise in permittivity due to internal electric field distribution while in BZT40 and BZT50 these micro-regions are substantially reduced when more disorder is introduced due to the higher concentration of Zr ions. The obtained high permittivity of the BZT attributed to the dipole polarization of PNRs makes it suitable for multilayer ceramic capacitor (MLCC) applications.…”

Investigation of structural, electrical and magnetic properties of BiFeO3–Bi(MgTi)O3–PbTiO3 ceramic system

“…Damjanovic [22] observed direct piezoelectric effect in doped PZT ceramics and related it to Rayleigh type dependence. The same type of frequency dependence is found in many ferroelectric ceramics [23,24]. Room temperature variation of dielectric loss with frequency does not show an appreciable change.…”