Polydomain configuration in epitaxial Pb0.5Sr0.5TiO3/La0.5Sr0.5CoO3 heterostructures

被引：4
|
作者：
Plekh, M. [1 ]
Narkilahti, J. [1 ]
Levoska, J. [1 ]
Tyunina, M. [1 ]
机构：
[1] Univ Oulu, Microelect & Mat Phys Labs, FI-90014 Oulu, Finland
来源：
APPLIED PHYSICS LETTERS | 2010年 / 97卷 / 20期
基金：
芬兰科学院;
关键词：
THIN-FILMS;
D O I：
10.1063/1.3519977
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
In epitaxial heterostructures Pb0.5Sr0.5TiO3/La0.5Sr0.5CoO3/MgO(001) with a large lattice mismatch, ferroelectric domains and properties were experimentally studied. In 130 nm thick polydomain tetragonal Pb0.5Sr0.5TiO3 films, random arrays of similar to 0.1-0.5 mu m sized a- and c-domains are found. In vertical capacitors with Pt top electrodes, a steplike switching of polarization is observed. The results are discussed in terms of island growth and different switching mechanisms in a-and c-domains. (C) 2010 American Institute of Physics. [doi:10.1063/1.3519977]
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页数：3
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