Perovskite phase stabilization in epitaxial Pb(Mg1/3Nb2/3)O3–PbTiO3 films by deposition onto vicinal (001) SrTiO3 substrates
作者： Jeffrey J Krajewski , Chang-Beom Eom , Stephen K Streiffer , Xiaoqing Pan , Wei Tian
DOI: 10.1063/1.1414293
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摘要: We report the perovskite phase stabilization of 0.67Pb(Mg1/3Nb2/3)O3–0.33PbTiO3 (PMN-PT) epitaxial thin films by deposition onto miscut substrates. Films were grown on (001) SrTiO3 substrates with angles from 0 to 8 degrees toward [100] direction using 90° off-axis magnetron sputtering. high (>4°) showed almost pure in both x-ray diffraction and transmission electron microscopy image, nearly stoichiometric. In contrast, exact contained a volume fraction pyrochlore phases Pb deficiency. Atomic force reveals that 8° have much smoother surface morphology than those SrTiO3. Cross-sectional images reveal nucleate top phase, amount increase film thickness. A an substrate exhibits polarization hysteresis loop a...
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