Misorientation Control and Functionality Design of Nanopillars in Self-Assembled Perovskite-Spinel Heteroepitaxial Nanostructures

被引：65

作者：

Liao, Sheng-Chieh ^{[2
]}

Tsai, Pei-Yu ^{[1
]}

Liang, Chen-Wei ^{[1
]}

Liu, Heng-Jui ^{[2
]}

Yang, Jan-Chi ^{[1
]}

Lin, Su-Jien ^{[2
]}

Lai, Chih-Huang ^{[2
]}

Chu, Ying-Hao ^{[1
]}

机构：

[1] Natl Chiao Tung Univ, Dept Mat Sci & Engn, Hsinchu 30010, Taiwan

[2] Natl Tsing Hua Univ, Dept Mat Sci & Engn, Hsinchu 30013, Taiwan

来源：

ACS NANO | 2011年 / 5卷 / 05期

关键词：

self-assemble; orientation control; heteroepitaxial; pervoskite; spinel; ANISOTROPY; INTERFACE;

D O I：

10.1021/nn200880t

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

In this study, advanced control of crystallographic orientations and magnetic properties of self-assembled nanostructures via rational selections of substrates is demonstrated. We show that in the perovskite spinel BiFeO3-CoFe2O4 model system the crystal orientation of self-assembled CoFe2O4 nanopillars can be tuned among (001), (011), and (111), while that of the BiFeO3 matrix is fixed in (001). Moreover, the resultant CoFe2O4 nanopIllars appear in various shapes: pyramid, roof, and triangular platform, respectively. The tunable nanostructures through this approach enable the control of material functionality such as the magnetic anisotropy of CoFe2O4. This study opens a new pathway for the engineering of self-assembled heteroepitaxial nanostructures.

引用

页码：4118 / 4122

页数：5

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