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Lattice instabilities in cubic pyrochlore BiTiO
Craig J. Fennie, Ram Seshadri, Karin M. Rabe
The oxide pyrochlore BiTiO is in some ways analogous to perovskite PbTiO, in that BiTiO has two cations, Bi and Ti in oxidation states tha…
Suppressed dependence of polarization on epitaxial strain in highly polar ferroelectrics
Ho Nyung Lee, Serge M. Nakhmanson, Matthew F. Chisholm +3
A combined experimental and computational investigation of coupling between polarization and epitaxial strain in highly polar ferroelectric PbZr_0.2Ti_0.8O_3 (PZT) thin films is re…
Modelling Thickness-Dependence of Ferroelectric Thin Film Properties
L. Palova, P. Chandra, K. M. Rabe
We present a segregrated strain model that describes the thickness-dependent dielectric properties of ferroelectric films. Using a phenomenological Landau approach, we present resu…
Nanoscale Smoothing and the Analysis of Interfacial Charge and Dipolar Densities
Javier Junquera, Morrel H. Cohen, Karin M. Rabe
The interface properties of interest in multilayers include interfacial charge densities, dipole densities, band offsets, and screening-lengths, among others. Most such properties…