Twin Crystal Induced near Zero Thermal Expansion in SnO2 Nanowires

He Zhu; Qiang Li; Chao Yang; Qinghua Zhang; Yang Ren; Qilong Gao; Na Wang; Kun Lin; Jinxia Deng; Jun Chen; Lin Gu; Jiawang Hong; Xianran Xing

doi:10.1021/jacs.8b03232

Twin Crystal Induced near Zero Thermal Expansion in SnO₂ Nanowires

He Zhu, Qiang Li, Chao Yang, Qinghua Zhang, Yang Ren, Qilong Gao, Na Wang, Kun Lin, Jinxia Deng, Jun Chen, Lin Gu, Jiawang Hong, Xianran Xing^*

^*Corresponding author for this work

Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review

42 Citations (Scopus)

Abstract

Knowledge of controllable thermal expansion is a fundamental issue in the field of materials science and engineering. Direct blocking of the thermal expansions in positive thermal expansion materials is a challenging but fascinating task. Here we report a near zero thermal expansion (ZTE) of SnO₂ achieved from twin crystal nanowires, which is highly correlated to the twin boundaries. Local structural evolutions followed by pair distribution function revealed a remarkable thermal local distortion along the twin boundary. Lattice dynamics investigated by Raman scattering evidenced the hardening of phonon frequency induced by the twin crystal compressing, giving rise to the ZTE of SnO₂ nanowires. Further DFT calculation of Grüneisen parameters confirms the key role of compressive stress on ZTE. Our results provide an insight into the thermal expansion behavior regarding to twin crystal boundaries, which could be beneficial to the applications.

Original language	English
Pages (from-to)	7403-7406
Journal	Journal of the American Chemical Society
Volume	140
Issue number	24
DOIs	https://doi.org/10.1021/jacs.8b03232
Publication status	Published - 20 Jun 2018
Externally published	Yes

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Publication details (e.g. title, author(s), publication statuses and dates) are captured on an “AS IS” and “AS AVAILABLE” basis at the time of record harvesting from the data source. Suggestions for further amendments or supplementary information can be sent to [email protected].

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title = "Twin Crystal Induced near Zero Thermal Expansion in SnO2 Nanowires",

abstract = "Knowledge of controllable thermal expansion is a fundamental issue in the field of materials science and engineering. Direct blocking of the thermal expansions in positive thermal expansion materials is a challenging but fascinating task. Here we report a near zero thermal expansion (ZTE) of SnO2 achieved from twin crystal nanowires, which is highly correlated to the twin boundaries. Local structural evolutions followed by pair distribution function revealed a remarkable thermal local distortion along the twin boundary. Lattice dynamics investigated by Raman scattering evidenced the hardening of phonon frequency induced by the twin crystal compressing, giving rise to the ZTE of SnO2 nanowires. Further DFT calculation of Gr{\"u}neisen parameters confirms the key role of compressive stress on ZTE. Our results provide an insight into the thermal expansion behavior regarding to twin crystal boundaries, which could be beneficial to the applications.",

author = "He Zhu and Qiang Li and Chao Yang and Qinghua Zhang and Yang Ren and Qilong Gao and Na Wang and Kun Lin and Jinxia Deng and Jun Chen and Lin Gu and Jiawang Hong and Xianran Xing",

note = "Publication details (e.g. title, author(s), publication statuses and dates) are captured on an “AS IS” and “AS AVAILABLE” basis at the time of record harvesting from the data source. Suggestions for further amendments or supplementary information can be sent to [email protected].",

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TY - JOUR

T1 - Twin Crystal Induced near Zero Thermal Expansion in SnO2 Nanowires

AU - Zhu, He

AU - Li, Qiang

AU - Yang, Chao

AU - Zhang, Qinghua

AU - Ren, Yang

AU - Gao, Qilong

AU - Wang, Na

AU - Lin, Kun

AU - Deng, Jinxia

AU - Chen, Jun

AU - Gu, Lin

AU - Hong, Jiawang

AU - Xing, Xianran

N1 - Publication details (e.g. title, author(s), publication statuses and dates) are captured on an “AS IS” and “AS AVAILABLE” basis at the time of record harvesting from the data source. Suggestions for further amendments or supplementary information can be sent to [email protected].

PY - 2018/6/20

Y1 - 2018/6/20

N2 - Knowledge of controllable thermal expansion is a fundamental issue in the field of materials science and engineering. Direct blocking of the thermal expansions in positive thermal expansion materials is a challenging but fascinating task. Here we report a near zero thermal expansion (ZTE) of SnO2 achieved from twin crystal nanowires, which is highly correlated to the twin boundaries. Local structural evolutions followed by pair distribution function revealed a remarkable thermal local distortion along the twin boundary. Lattice dynamics investigated by Raman scattering evidenced the hardening of phonon frequency induced by the twin crystal compressing, giving rise to the ZTE of SnO2 nanowires. Further DFT calculation of Grüneisen parameters confirms the key role of compressive stress on ZTE. Our results provide an insight into the thermal expansion behavior regarding to twin crystal boundaries, which could be beneficial to the applications.

AB - Knowledge of controllable thermal expansion is a fundamental issue in the field of materials science and engineering. Direct blocking of the thermal expansions in positive thermal expansion materials is a challenging but fascinating task. Here we report a near zero thermal expansion (ZTE) of SnO2 achieved from twin crystal nanowires, which is highly correlated to the twin boundaries. Local structural evolutions followed by pair distribution function revealed a remarkable thermal local distortion along the twin boundary. Lattice dynamics investigated by Raman scattering evidenced the hardening of phonon frequency induced by the twin crystal compressing, giving rise to the ZTE of SnO2 nanowires. Further DFT calculation of Grüneisen parameters confirms the key role of compressive stress on ZTE. Our results provide an insight into the thermal expansion behavior regarding to twin crystal boundaries, which could be beneficial to the applications.

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U2 - 10.1021/jacs.8b03232

DO - 10.1021/jacs.8b03232

M3 - RGC 21 - Publication in refereed journal

C2 - 29865794

SN - 0002-7863

VL - 140

SP - 7403

EP - 7406

JO - Journal of the American Chemical Society

JF - Journal of the American Chemical Society

IS - 24

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