Spontaneous orientation-tuning driven by the strain variation in self-assembled ZnO-SrRuO3 heteroepitaxy

Yuanmin Zhu; Wei Sea Chang; Rong Yu; Ruirui Liu; Tzu-Chiao Wei; Jr-Hau He; Ying-Hao Chu; Qian Zhan

doi:10.1063/1.4935422

Spontaneous orientation-tuning driven by the strain variation in self-assembled ZnO-SrRuO3 heteroepitaxy

Yuanmin Zhu, Wei Sea Chang, Rong Yu, Ruirui Liu, Tzu-Chiao Wei, Jr-Hau He, Ying-Hao Chu, Qian Zhan

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Abstract

Heteroepitaxial ZnO and SrRuO3 were grown on SrTiO3 (111) substrates and formed a self-assembled wurtzite-perovskite nanostructure. Spontaneous orientation-tuning of the SrRuO3 pillars was observed, with the growth direction changing from [111]SRO to [011]SRO as the film thickness increased, which is attributed to a misfit strain transition from the biaxial strain imposed by the SrTiO3 substrate to the vertical strain provided by the ZnO matrix. The [011]-SrRuO3 and [0001]-ZnO combination presents a favorable matching in the nanocomposite films, resulting in higher charge carrier mobility. This vertically integrated configuration and regulation on the crystallographic orientations are expected to be employed in designing multi-functional nanocomposite systems for applications in electronic devices.

Original language	English (US)
Pages (from-to)	191902
Journal	Applied Physics Letters
Volume	107
Issue number	19
DOIs	https://doi.org/10.1063/1.4935422
State	Published - Nov 9 2015

Bibliographical note

KAUST Repository Item: Exported on 2020-10-01
Acknowledgements: This work was supported by the National Natural Science Foundation of China (Grant Nos. 51371031, 51371102, 51571021, and 51390475); National Basic Research Program of China (2011CB606406); the National Science Council, Taiwan (NSC-101-2119-M-009-003-MY2); Ministry of Education, Taiwan (MOE-ATU 101W961); and Center for interdisciplinary science of National Chiao Tung University.

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@article{29cd97bc52864049a2cfdbca97c473e2,

title = "Spontaneous orientation-tuning driven by the strain variation in self-assembled ZnO-SrRuO3 heteroepitaxy",

abstract = "Heteroepitaxial ZnO and SrRuO3 were grown on SrTiO3 (111) substrates and formed a self-assembled wurtzite-perovskite nanostructure. Spontaneous orientation-tuning of the SrRuO3 pillars was observed, with the growth direction changing from [111]SRO to [011]SRO as the film thickness increased, which is attributed to a misfit strain transition from the biaxial strain imposed by the SrTiO3 substrate to the vertical strain provided by the ZnO matrix. The [011]-SrRuO3 and [0001]-ZnO combination presents a favorable matching in the nanocomposite films, resulting in higher charge carrier mobility. This vertically integrated configuration and regulation on the crystallographic orientations are expected to be employed in designing multi-functional nanocomposite systems for applications in electronic devices.",

author = "Yuanmin Zhu and Chang, {Wei Sea} and Rong Yu and Ruirui Liu and Tzu-Chiao Wei and Jr-Hau He and Ying-Hao Chu and Qian Zhan",

note = "KAUST Repository Item: Exported on 2020-10-01 Acknowledgements: This work was supported by the National Natural Science Foundation of China (Grant Nos. 51371031, 51371102, 51571021, and 51390475); National Basic Research Program of China (2011CB606406); the National Science Council, Taiwan (NSC-101-2119-M-009-003-MY2); Ministry of Education, Taiwan (MOE-ATU 101W961); and Center for interdisciplinary science of National Chiao Tung University.",

year = "2015",

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doi = "10.1063/1.4935422",

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T1 - Spontaneous orientation-tuning driven by the strain variation in self-assembled ZnO-SrRuO3 heteroepitaxy

AU - Zhu, Yuanmin

AU - Chang, Wei Sea

AU - Yu, Rong

AU - Liu, Ruirui

AU - Wei, Tzu-Chiao

AU - He, Jr-Hau

AU - Chu, Ying-Hao

AU - Zhan, Qian

N1 - KAUST Repository Item: Exported on 2020-10-01 Acknowledgements: This work was supported by the National Natural Science Foundation of China (Grant Nos. 51371031, 51371102, 51571021, and 51390475); National Basic Research Program of China (2011CB606406); the National Science Council, Taiwan (NSC-101-2119-M-009-003-MY2); Ministry of Education, Taiwan (MOE-ATU 101W961); and Center for interdisciplinary science of National Chiao Tung University.

PY - 2015/11/9

Y1 - 2015/11/9

N2 - Heteroepitaxial ZnO and SrRuO3 were grown on SrTiO3 (111) substrates and formed a self-assembled wurtzite-perovskite nanostructure. Spontaneous orientation-tuning of the SrRuO3 pillars was observed, with the growth direction changing from [111]SRO to [011]SRO as the film thickness increased, which is attributed to a misfit strain transition from the biaxial strain imposed by the SrTiO3 substrate to the vertical strain provided by the ZnO matrix. The [011]-SrRuO3 and [0001]-ZnO combination presents a favorable matching in the nanocomposite films, resulting in higher charge carrier mobility. This vertically integrated configuration and regulation on the crystallographic orientations are expected to be employed in designing multi-functional nanocomposite systems for applications in electronic devices.

AB - Heteroepitaxial ZnO and SrRuO3 were grown on SrTiO3 (111) substrates and formed a self-assembled wurtzite-perovskite nanostructure. Spontaneous orientation-tuning of the SrRuO3 pillars was observed, with the growth direction changing from [111]SRO to [011]SRO as the film thickness increased, which is attributed to a misfit strain transition from the biaxial strain imposed by the SrTiO3 substrate to the vertical strain provided by the ZnO matrix. The [011]-SrRuO3 and [0001]-ZnO combination presents a favorable matching in the nanocomposite films, resulting in higher charge carrier mobility. This vertically integrated configuration and regulation on the crystallographic orientations are expected to be employed in designing multi-functional nanocomposite systems for applications in electronic devices.

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M3 - Article

SN - 0003-6951

VL - 107

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JO - Applied Physics Letters

JF - Applied Physics Letters

IS - 19

ER -

Spontaneous orientation-tuning driven by the strain variation in self-assembled ZnO-SrRuO3 heteroepitaxy

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