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Issue 11, 2020

Deviatoric stress-induced quasi-reconstructive phase transition in ZnTe

Author affiliations

Abstract

Understanding phase evolutions and the underlying mechanism under external stimuli is of fundamental importance for novel material discovery. Herein, combining angular dispersive X-ray diffraction and first-principles pathway sampling, we found that the ZnTe alloy undergoes a quasi-reconstructive transition to a metastable rocksalt phase under deviatoric stress. The rocksalt ZnTe has reconstructed chemical bonds and dendrite crystal morphology. It also suffers more severe thermodynamic hysteresis compared with the same experiments under hydrostatic pressure. However, the phase transition towards the rock-salt phase is still described by relatively small atomic displacements and is slightly first order; thus, it is neither fully displacive nor fully reconstructive. The quasi-reconstructive transition in ZnTe narrows its electronic bandgap and may provide insights into the semiconductor–metal transition in II–VI alloys in general.

Graphical abstract: Deviatoric stress-induced quasi-reconstructive phase transition in ZnTe

Supplementary files

Article information


Submitted
19 Nov 2019
Accepted
02 Feb 2020
First published
03 Feb 2020

J. Mater. Chem. C, 2020,8, 3795-3799
Article type
Paper

Deviatoric stress-induced quasi-reconstructive phase transition in ZnTe

Y. Zhuang, L. Wu, B. Gao, Z. Cui, H. Gou, D. Zhang, S. Zhu and Q. Hu, J. Mater. Chem. C, 2020, 8, 3795 DOI: 10.1039/C9TC06334J

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