Piezoelectric resonance investigation of zr-rich PZT at room temperature

Temperature dependence of the Brillouin frequency shift and the linewidth of the LA mode in the ferroelectric phase of PZT-x (PbZr<inf>1&#x2212;x</inf>Ti<inf>x</inf>O<inf>3</inf>)

“…As also indicated previously [2], this solid solution is an ideal perovskite in the paraelectric-cubic phase (P C ) with the unit cell which becomes rhombohedral below T FP (=657 K) in the ferroelectric phase. Regarding the temperature interval, this phase can be divided into the two ferroelectric phases with the same crystal structure, namely, F RH (Ferroelectricrhombohedral high temperature phase) and F RL (ferroelectricrhombohedral low temperature phase).…”

“…The ferroelectric phase transition is of first order with the Ti composition (x) between 0.03<x<0.23 , as obtained from the pyroelectric and dielectric measurements [2]. As the Ti content (x) is increased, the paraelectric-ferroelectric transition becomes second order for PbZr 1-x Ti x O 3 [2,7].…”

“…Since x-T (composition-temperature) phase diagram was determined experimentally [1], various properties of the solid solution PbZr 1-x Ti x O 3 have been studied extensively [2][3][4][5], also close to the morphotropic phase boundary [6,7].…”

“…As the Ti content (x) is increased, the paraelectric-ferroelectric transition becomes second order for PbZr 1-x Ti x O 3 [2,7]. The second order (or very close to the second order ) transition occurs x §0.45 in this mixed system [7].…”

Cobalt–titanium multilayer thin films: Effect of thickness of titanium spacer layer on impedance properties

“…It can then be said that this resonance corresponds to a piezoelectric vibration mode. However, in general, piezoelectric resonance occurs at frequencies at order of kilohertz or megahertz [18][19][20][21][22][23]. Regular circles clearly show that incomplete part of the resonance behavior is symmetric.…”