Perovskite phase stabilization in epitaxial Pb(Mg1/3Nb2/3)O3-PbTiO3 films by deposition onto vicinal (001) SrTiO3 substrates

被引：79

作者：

Bu, SD ^{[1
]}

Lee, MK

Eom, CB

Tian, W

Pan, XQ

Streiffer, SK

Krajewski, JJ

机构：

[1] Univ Wisconsin, Dept Mat Sci & Engn, Madison, WI 53706 USA

[2] Univ Michigan, Dept Mat Sci & Engn, Ann Arbor, MI 48109 USA

[3] Argonne Natl Lab, Div Mat Sci, Argonne, IL 60439 USA

[4] Bell Lab, Lucent Technol, Murray Hill, NJ 07974 USA

来源：

APPLIED PHYSICS LETTERS | 2001年 / 79卷 / 21期

关键词：

D O I：

10.1063/1.1414293

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We report the perovskite phase stabilization of 0.67Pb(Mg1/3Nb2/3)O-3-0.33PbTiO(3) (PMN-PT) epitaxial thin films by deposition onto miscut substrates. Films were grown on (001) SrTiO3 substrates with miscut angles from 0 to 8 degrees toward the [100] direction using 90 degrees off-axis magnetron sputtering. Films on high miscut substrates (>4 degrees) showed almost the pure perovskite phase in both x-ray diffraction and transmission electron microscopy image, and were nearly stoichiometric. In contrast, films on exact (001) SrTiO3 contained a high volume fraction of pyrochlore phases with Pb deficiency. Atomic force microscopy reveals that films on 8 degrees miscut substrates have a much smoother surface morphology than those on exact (001) SrTiO3. Cross-sectional transmission electron microscopy images reveal that the pyrochlore phases nucleate on top of the perovskite phase, and that the amount of the pyrochlore phases increase with film thickness. A film on an 8 degrees miscut substrate exhibits a polarization hysteresis loop with a remnent polarization of 20 muC/cm(2) at room temperature. (C) 2001 American Institute of Physics.

引用

页码：3482 / 3484

页数：3

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