The anisotropic sublimation induces rhombohedral to rock-salt phase transformation of chalcogenide SnSb2Te4 two-dimensional nanomaterial

Zhang，Qing1; Wang，Menglong1; Zhang，Jianfei2; Ma，Dongfeng1; Li，Wei1; Wang，Kaiwen1,3; Chen，Yongjin4; Yang，Xiaomeng1; Li，Zhipeng5; Cai，Jixiang5; Mao，Shengcheng1; Zhang，Ze1,6; Han，Xiaodong1,7

2024-06-01

10.1016/j.mtnano.2024.100478

Materials Today Nano   影响因子和分区

2588-8420

We report the sublimation and phase transformation mechanisms of a two-dimensional (2D) chalcogenide SnSbTe using a lab-developed in-situ electro-thermal testing system on a C-corrected transmission electron microscope. It reveals that the sublimation process is primarily governed by the surface energy mechanism, following an anisotropic route. The van der Waals (vdW) layers ending with Te atoms lead to the preferential sublimation on (003) plane, with the (1 1‾ 4) and (117) planes accommodating the sublimation. It is uncovered for the first time, that the preferential and accommodated sublimation of Te and Sb atoms along the vdW planes results in short-range diffusion inducing a phase transition from rhombohedral SnSbTe to rock-salt (SnSb)Te. These results highlight complex physics processes of 2D materials under service conditions and the route of atomic-resolved electro-thermal research platforms for investigations of complex atomistic mechanisms of 2D materials by thermal-electric external fields.

Anisotropic sublimation In-situ TEM Phase transition SnSb2Te4

SCI ; EI

英语

通讯

2-s2.0-85191295831

Scopus

1.Beijing Key Laboratory of Microstructure and Property of Advanced Materials,Faculty of Materials and Manufacturing,Beijing University of Technology,Beijing,100124,China
2.Beijing Key Laboratory of Multimedia and Intelligent Software Technology,Beijing Artificial Intelligence Institute,Faculty of Information Technology,Beijing University of Technology,Beijing,100124,China
3.Institut de Cincies Fotoniques,The Barcelona Institute of Science and Technology,Barcelona,Castelldefels,08860,Spain
4.Center for High Pressure Science and Technology Advanced Research (HPSTAR),Beijing,100094,China
5.School of Physics and Optoelectronic Engineering,Beijing University of Technology,Beijing,100124,China
6.State Key Laboratory of Silicon Materials and Department of Materials Science and Engineering,Zhejiang University,Hangzhou,310058,China
7.Department of Materials Science and Engineering,Southern University of Science and Technology,Shenzhen,518055,China

Zhang，Qing,Wang，Menglong,Zhang，Jianfei,et al. The anisotropic sublimation induces rhombohedral to rock-salt phase transformation of chalcogenide SnSb2Te4 two-dimensional nanomaterial[J]. Materials Today Nano,2024,26.

Zhang，Qing.,Wang，Menglong.,Zhang，Jianfei.,Ma，Dongfeng.,Li，Wei.,...&Han，Xiaodong.(2024).The anisotropic sublimation induces rhombohedral to rock-salt phase transformation of chalcogenide SnSb2Te4 two-dimensional nanomaterial.Materials Today Nano,26.

Zhang，Qing,et al."The anisotropic sublimation induces rhombohedral to rock-salt phase transformation of chalcogenide SnSb2Te4 two-dimensional nanomaterial".Materials Today Nano 26(2024).