From Two-, One-, to Zero-Dimensional Vacancies: A Densification Pattern for a Typcial Transition-Metal Dichalcogenide of TiSe2

doi:10.1021/acs.jpclett.1c02308

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	From Two-, One-, to Zero-Dimensional Vacancies: A Densification Pattern for a Typcial Transition-Metal Dichalcogenide of TiSe2
	K. Hu; L.-M. Guan; D. Han; F. Liu and S.-Y. Xie
	2021
发表期刊	Journal of Physical Chemistry Letters
ISSN	19487185
卷号	12 期号:39 页码:9422-9428
摘要	In the areas of condensed matter physics, geoscience, material science, and inorganic chemistry, how the crystal structures evolve under an external field such as high-pressure is a fundamental question. By taking TiSe2 as the case, we investigate the phase transformations of the layered transition-metal dichalcogenides (TMDs) under high-pressure. The ambient 6-fold P-3m1 TiSe2 undergoes a transformation into the monoclinic 8-fold coordinated C2/m phase at 15 GPa and then into the hexagonal 9-fold Fe2P-type structure at 34 GPa. The above phase transitions can be unitedly described as the evolution of the vacancies: from a layered structure with two-dimensional (2D) vacancies to the structure with one-dimensional (1D) and zero-dimensional (0D) vacancies. The proposed densification model of TiSe2 reveals the processes how the symmetry breaking phase of spatial chemical bonding restores the symmetry under the isotropic external pressure. 2021 American Chemical Society.
DOI	10.1021/acs.jpclett.1c02308
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收录类别	SCI ; EI
引用统计
文献类型	期刊论文
条目标识符	http://ir.ciomp.ac.cn/handle/181722/65262
专题	中国科学院长春光学精密机械与物理研究所
推荐引用方式 GB/T 7714	K. Hu,L.-M. Guan,D. Han,et al. From Two-, One-, to Zero-Dimensional Vacancies: A Densification Pattern for a Typcial Transition-Metal Dichalcogenide of TiSe2[J]. Journal of Physical Chemistry Letters,2021,12(39):9422-9428.
APA	K. Hu,L.-M. Guan,D. Han,&F. Liu and S.-Y. Xie.(2021).From Two-, One-, to Zero-Dimensional Vacancies: A Densification Pattern for a Typcial Transition-Metal Dichalcogenide of TiSe2.Journal of Physical Chemistry Letters,12(39),9422-9428.
MLA	K. Hu,et al."From Two-, One-, to Zero-Dimensional Vacancies: A Densification Pattern for a Typcial Transition-Metal Dichalcogenide of TiSe2".Journal of Physical Chemistry Letters 12.39(2021):9422-9428.

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