Electron diffraction study of inter- and intrapolytypic phase transitions in transition metal dichalcogenides. IV Cinematogeraphic Observations of the 1Tβ → 1Tγ-Phase Transition in TaS2

1977 ◽  
Vol 42 (2) ◽  
pp. 565-570 ◽  
Author(s):  
J. Van Landuyt ◽  
G. Van Tendeloo ◽  
S. Amelinckx
Surfaces ◽  
2020 ◽  
Vol 4 (1) ◽  
pp. 1-8
Author(s):  
Tomasz Kosmala ◽  
Pawel Palczynski ◽  
Matteo Amati ◽  
Luca Gregoratti ◽  
Hikmet Sezen ◽  
...  

Here, we present a proof-of-concept experiment where phase engineering at the nanoscale of 2D transition metal dichalcogenides (TMDC) flakes (from semiconducting 2H phase to metallic 1T phase) can be achieved by thermal annealing of a TMDC/Au/mica system. The local dewetting of Au particles and resulting tensile strain produced on the TMDC flakes, strongly bound to the Au surface through effective S-Au bonds, can induce a local structural phase transition. An important role is also played by the defects induced by the thermal annealing: when vacancies are present, the threshold strain needed to trigger the phase transition is significantly reduced. Scanning photoelectron microscopy (SPEM) was revealed to be the perfect tool to monitor the described phenomena.


Nanoscale ◽  
2018 ◽  
Vol 10 (43) ◽  
pp. 20171-20177 ◽  
Author(s):  
Bingzheng Yan ◽  
Baitao Zhang ◽  
Hongkun Nie ◽  
Guoru Li ◽  
Xiaoli Sun ◽  
...  

1T-titanium selenide (1T-TiSe2), a representative of 1T phase transition metal dichalcogenides (TMDs), exhibits semimetallic behaviour with a nearly zero bandgap structure, which makes it a promising photoelectric material.


Author(s):  
H. Rager ◽  
M. Schosnig ◽  
A.K. Schaper ◽  
A. Kutoglu ◽  
W. Treutmann

This paper deals with transmission electron microscope experiments of Ca,Sr-åkermanite solid solutions at temperatures between 100 K and 375 K. The aim of the investigations was to study the compositional and temperature dependence of phase transitions from the normal to the incommensurately modulated structure of(Ca


2020 ◽  
Vol 8 (13) ◽  
pp. 4432-4440 ◽  
Author(s):  
Xiangyu Zhou ◽  
Haibo Shu ◽  
Qiuqi Li ◽  
Pei Liang ◽  
Dan Cao ◽  
...  

Electron injection leads to the transition of two-dimensional MoX2 (X = S, Se, and Te) nanosheets from the semiconducting H phase to semimetallic T′ phase.


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