O3stilt and the Pb/(Zr/Ti) displacement order parameters in Zr-richPbZr1−

Dielectric characterization of the phase transitions in Pb1−y/2(Zr1−xTix)1−yNbyO3(0.03⩽x⩽0.04, 0.02⩽y⩽0.05)

“…This dependence supports the idea 20 that the Nb 5ϩ ions substitute Zr 4ϩ ions and that they are not located at interstitial positions. 19 This is also consistent with the observed 27 weak coupling between O 3 tilt ͑re-sponsible for the F RL -F RH transition͒ and the polarization.…”

“…The values for g(0,0) and h(0,0) are fully consistent with those obtained from hysteresis loops data. 27 We should make it clear that the different procedures used in previous works 21,27,28 to determine the dimensionless coefficients g and h, give consistently relatively well-defined values for g but lead to considerable uncertainties for h, and do not rule out the possibility that higher order coefficients are needed. These higher order coefficients might result in higher ⌬T/T C at low x values, where our theoretical curves depart most from the data.…”

Synthesis and Study of effect of Cr3 concentration on Physical properties and pyroelectric property of the Pb Zr0 825Ti0 175 O3 ceramic system

“…We have seen that ceramic densities of all samples are strongly changed under the effect of the Cr 3+ concentrations. It is agreed with changes of their microstructure above mentioned and M0, M6 are of the highest densities (ρ = 7.48 g/cm 3 ).…”

“…In recent years, have been many published papers [2][3][4][5][6][7][8][9] pointing out that in the Zr-and Ti-rich of PZT compositions there are not only good ferroelectric, piezoelectric effects, but also very strong pyroelectric effect. In this paper author would to present new experimental results of Pb(Zr 0.825 Ti 0.175 )O 3 -xCr 2 O 3 , where x = 0; 0.50; 0.75; 1.00; 1.25; 1.50; 2.00 % mol.…”

Strain Mechanisms in Lead-Free Ferroelectrics for Actuators

“…58,[457][458][459] It is interesting to note that even PZT, which is probably the most technologically relevant perovskite, features the presence of competing order parameters leading to FD and AFD instabilities depending on composition, temperature, and pressure. [460][461][462][463] A literature survey indicated that this is a common feature of perovskite ferroelectrics that determines the stability of their ferroelectricity. 456 A recent framework for frustrated ferroelectricity in tetragonal tungsten bronzes was developed based on competing instabilities.…”