Electrical polarization induced by atomically engineered compositional gradient in complex oxide solid solution

Ping Chun Wu, Rong Huang, Ying Hui Hsieh, Bo Wang, Min Yen, Sheng Zhu Ho, Akihito Kumamoto, Chaorong Zhong, Haili Song, Yi-Chun Chen, Long Qing Chen, Chun Gang Duan, Yuichi Ikuhara, Ying Hao Chu

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

Control of inhomogeneity in materials in order to avoid unexpected effects to the system remains a challenge. In this study, we seek to engineer inhomogeneity in materials and anticipate new properties. Through precise control of composition at the atomic scale, an electrical polarization is induced in the composition-graded LaAlO3–SrTiO3 solid solution epitaxially deposited on NdGaO3 substrates. By tailoring the direction of compositional gradient, the relationship between structure and electrical polarization is simulated via phase-field modeling and revealed by a combination of scanning transmission electron microscopy and scanning probe microscopy. The analysis of the results indicates that the induced polarization is due to the flexoelectric effect in the compositional gradient system. The results of this study provide a new pathway for obtaining a new material genome. Moreover, by a suitable design of the new genome, that is, by using different combinations of compositional gradient geometries, local conduction can be obtained and manipulated, providing a new approach to obtain the desired properties.

Original languageEnglish
Article number17
JournalNPG Asia Materials
Volume11
Issue number1
DOIs
Publication statusPublished - 2019 Dec 1

Fingerprint

Oxides
Solid solutions
solid solutions
Polarization
genome
Gradient
Inhomogeneity
gradients
oxides
Genome
inhomogeneity
polarization
Genes
Scanning Probe Microscopy
Gradient System
Scanning probe microscopy
Phase Field
Transmission Electron Microscopy
Chemical analysis
Conduction

All Science Journal Classification (ASJC) codes

  • Modelling and Simulation
  • Materials Science(all)
  • Condensed Matter Physics

Cite this

Wu, Ping Chun ; Huang, Rong ; Hsieh, Ying Hui ; Wang, Bo ; Yen, Min ; Ho, Sheng Zhu ; Kumamoto, Akihito ; Zhong, Chaorong ; Song, Haili ; Chen, Yi-Chun ; Chen, Long Qing ; Duan, Chun Gang ; Ikuhara, Yuichi ; Chu, Ying Hao. / Electrical polarization induced by atomically engineered compositional gradient in complex oxide solid solution. In: NPG Asia Materials. 2019 ; Vol. 11, No. 1.
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abstract = "Control of inhomogeneity in materials in order to avoid unexpected effects to the system remains a challenge. In this study, we seek to engineer inhomogeneity in materials and anticipate new properties. Through precise control of composition at the atomic scale, an electrical polarization is induced in the composition-graded LaAlO3–SrTiO3 solid solution epitaxially deposited on NdGaO3 substrates. By tailoring the direction of compositional gradient, the relationship between structure and electrical polarization is simulated via phase-field modeling and revealed by a combination of scanning transmission electron microscopy and scanning probe microscopy. The analysis of the results indicates that the induced polarization is due to the flexoelectric effect in the compositional gradient system. The results of this study provide a new pathway for obtaining a new material genome. Moreover, by a suitable design of the new genome, that is, by using different combinations of compositional gradient geometries, local conduction can be obtained and manipulated, providing a new approach to obtain the desired properties.",
author = "Wu, {Ping Chun} and Rong Huang and Hsieh, {Ying Hui} and Bo Wang and Min Yen and Ho, {Sheng Zhu} and Akihito Kumamoto and Chaorong Zhong and Haili Song and Yi-Chun Chen and Chen, {Long Qing} and Duan, {Chun Gang} and Yuichi Ikuhara and Chu, {Ying Hao}",
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Wu, PC, Huang, R, Hsieh, YH, Wang, B, Yen, M, Ho, SZ, Kumamoto, A, Zhong, C, Song, H, Chen, Y-C, Chen, LQ, Duan, CG, Ikuhara, Y & Chu, YH 2019, 'Electrical polarization induced by atomically engineered compositional gradient in complex oxide solid solution', NPG Asia Materials, vol. 11, no. 1, 17. https://doi.org/10.1038/s41427-019-0117-y

Electrical polarization induced by atomically engineered compositional gradient in complex oxide solid solution. / Wu, Ping Chun; Huang, Rong; Hsieh, Ying Hui; Wang, Bo; Yen, Min; Ho, Sheng Zhu; Kumamoto, Akihito; Zhong, Chaorong; Song, Haili; Chen, Yi-Chun; Chen, Long Qing; Duan, Chun Gang; Ikuhara, Yuichi; Chu, Ying Hao.

In: NPG Asia Materials, Vol. 11, No. 1, 17, 01.12.2019.

Research output: Contribution to journalArticle

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AU - Wu, Ping Chun

AU - Huang, Rong

AU - Hsieh, Ying Hui

AU - Wang, Bo

AU - Yen, Min

AU - Ho, Sheng Zhu

AU - Kumamoto, Akihito

AU - Zhong, Chaorong

AU - Song, Haili

AU - Chen, Yi-Chun

AU - Chen, Long Qing

AU - Duan, Chun Gang

AU - Ikuhara, Yuichi

AU - Chu, Ying Hao

PY - 2019/12/1

Y1 - 2019/12/1

N2 - Control of inhomogeneity in materials in order to avoid unexpected effects to the system remains a challenge. In this study, we seek to engineer inhomogeneity in materials and anticipate new properties. Through precise control of composition at the atomic scale, an electrical polarization is induced in the composition-graded LaAlO3–SrTiO3 solid solution epitaxially deposited on NdGaO3 substrates. By tailoring the direction of compositional gradient, the relationship between structure and electrical polarization is simulated via phase-field modeling and revealed by a combination of scanning transmission electron microscopy and scanning probe microscopy. The analysis of the results indicates that the induced polarization is due to the flexoelectric effect in the compositional gradient system. The results of this study provide a new pathway for obtaining a new material genome. Moreover, by a suitable design of the new genome, that is, by using different combinations of compositional gradient geometries, local conduction can be obtained and manipulated, providing a new approach to obtain the desired properties.

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