The Ferroeletricity of Pb(Zr,Ti)O3 Films Grown on Compressive Substrates
The modified Landau-Devonshire thermodynamic theory has been used to investigate the ferroelectricity of Pb(Zr0.7, Ti0.3)O3 film grown on MgO substrate. A set of gradient thermal stresses is imposed on the films. The stress-temperature diagram, the spontaneous polarization and the dielectric susceptibility at 25°C on the stress were computed. Structure transitions of first order can be driven by the stress. The mean of out-plane spontaneous polarization and dielectric susceptibility on the temperature were also predicted.
Zhong Cao, Lixian Sun, Xueqiang Cao, Yinghe He
L. Q. Su and L. B. Li, "The Ferroeletricity of Pb(Zr,Ti)O3 Films Grown on Compressive Substrates", Advanced Materials Research, Vols. 233-235, pp. 2507-2511, 2011