Temperature Dependence of the Main Piezoelectric Parameters of a Nb-Li Doped Pzt Ceramic

Improving the pollutant removal efficiency of packed-bed plasma reactors incorporating ferroelectric components

“…Figure 5b shows a rounding of the Lissajous figure at higher frequency. We attribute this variation to changes in the dielectric constant of PZT with temperature [51][52][53][54][55][56] that would be particularly important at the highest frequency of 5 kHz, when the temperature of the reactor walls reached 70ºC under steady state conditions (effects of the frequency itself on the dielectric constant are negligible [52,57,58]). Similar changes in the shape of the Lissajous curve have been previously reported by other authors and attributed to modifications in the resistive or capacitive behaviour of the reactor [56,59].…”

Movers, shakers, and storers of charge: The legacy of ferroelectricians L. Eric Cross and Robert E. Newnham

“…Essential to the utility of the PZT family is the existence of a nearly temperature independent phase boundary, referred to as morphotropic phase boundary (MPB)., , The piezoelectric properties peak at phase boundaries, and the morphotropic phase boundary keeps the dielectric and piezoelectric properties high over a wide temperature range. As illustrated in Figure , where the temperature dependence of the piezoelectric properties is shown for a Li and Ta‐modified sodium potassium niobate (KNN) single crystal compared to those of a soft PZT ceramic [Pb(Nb 0.02 Li 0.007 Zr 0.51 Ti 0.463 )O 3 ] . In KNN, the polymorphic phase transitions between orthorhombic and tetragonal phases produce high piezoelectric coefficients over a narrow temperature range, and passing through the phase transformation temperatures leads to instabilities in the domain states, with the commensurate increase in hysteresis in the response.…”

Temperature Dependence of the Resonant Magnetoelectric Effect in Layered Heterostructures

“…Figure 5 shows the temperature dependences of PE modules for PZT and LGT materials using the data published in [ 36 , 37 , 38 ]. The PE modulus d 14 of the LGT material monotonically decreases by 25% from 3 to 2.2 pC/N with the temperature growth from 270 to 420 K, while the d 31 -modulus of the PZT material, on the contrary, monotonically increases threefold (from 100 to 300 pC/N) when the temperature increases from 200 to 420 K. As explained in reference [ 39 ], the growth of PE coefficients d with increasing temperature can be attributed to the following two mechanisms: (1) the extrinsic PE response is enhanced because lower activation energy is required for transition of domains from one minima state to another; (2) according to thermodynamic theory calculations the PE response of PZT in the single domain state increases with growing temperature as well.…”

“… Temperature dependences of piezoelectric moduli for La 3 Ga 5.5 Ta 0.5 O 14 (LGT) and PZT materials [ 36 , 37 , 38 ]. …”