Infrared Study of Amorphous Crystalline Phase Transition in an Annealed Amorphous Hydrogenated Silicon Carbon Alloy Film

1989 ◽  
Vol 162 ◽  
Author(s):  
D. K. Basa ◽  
F. W. Smith
Keyword(s):  
Phase Transition ◽  
Structural Change ◽  
Crystalline Phase ◽  
Alloy Film ◽  
Gas Mixture ◽  
Infrared Study ◽  
Hydrogenated Silicon ◽  
Amorphous Hydrogenated Silicon ◽  
Silicon Carbon ◽  
Crystalline Phase Transition

ABSTRACTAn amorphous hydrogenated silicon carbon alloy film (a Si1 x Cx :H with x = 0.29) was prepared by glow discharge decomposition of a silane and ethylene gas mixture. A careful and detailed investigation of the infrared absorption was undertaken in the range 400 to 4000 cm1 for both the as deposited (T =250°C) and annealed (up to 1200°C) film. This study demonstrates clearly that there is a structural change from amorphous to microcrystalline at T =8000C and then to crystalline phase at T a=1200° C.

Amorphous-to-crystalline phase transition of (InTe)x(GeTe) thin films

2010 ◽  
Vol 108 (2) ◽  
pp. 024506 ◽  
Author(s):  
Ki-Ho Song ◽  
Seung-Cheol Beak ◽  
Hyun-Yong Lee
Keyword(s):  
Thin Films ◽  
Phase Transition ◽  
Crystalline Phase ◽  
Crystalline Phase Transition

Improving dispersive mixing in compatibilized polystyrene/polyamide-6 blends via extension-dominated reactive single-screw extrusion

2021 ◽  
Vol 0 (0) ◽  
Author(s):  
Hao Chen ◽  
João M. Maia
Keyword(s):  
Phase Transition ◽  
Crystalline Phase ◽  
Reactive Extrusion ◽  
Polyamide 6 ◽  
Single Plane ◽  
Single Screw ◽  
Single Screw Extrusion ◽  
Double Plane ◽  
Dispersive Mixing ◽  
Crystalline Phase Transition

Abstract Extensional mixing elements (EMEs) that impose extension-dominated flow via stationary single-plane or double-plane hyperbolic converging-diverging channels were previously designed for twin-screw and single-screw extruders (TSE and SSE, respectively). In a recently published work by the authors, reactive extrusion was performed on PS/PA6 polymer blends TSE using EMEs and a crystalline phase transition of the minor phase in these droplets was observed as the size of droplet decreases from micron to submicron. Herein, we expand upon this work to SSE and study: a) The ability of the EMEs to improve dispersive mixing in the same blends; b) Assess the possibility of achieving the same crystalline phase transition in SSEs. The final blends were characterized by DSC, rheologically and morphologically via SEM, and the results show that while EME-based SSE leads to much improved mixing, better than non-EME TSE, the reduction in size of the PA6 disperse phase is not enough to induce the phase transition observed in EME-based TSE.

Particle anisotropy and crystalline phase transition in one-pot synthesis of nano-zirconia: a causal relationship

CrystEngComm ◽  
2018 ◽  
Vol 20 (7) ◽  
pp. 879-888 ◽  
Author(s):  
Francesca Tana ◽  
Andrea Serafini ◽  
Luca Lutterotti ◽  
Alberto Cigada ◽  
Fabio Variola ◽  
...  
Keyword(s):  
Phase Transition ◽  
Phase Composition ◽  
Causal Relationship ◽  
Crystalline Phase ◽  
One Pot ◽  
One Pot Synthesis ◽  
Nanocrystal Growth ◽  
Particle Anisotropy ◽  
Morphological Transformations ◽  
Crystalline Phase Transition

The effects of experimental variables on zirconia nanocrystal growth are investigated, correlating the morphological transformations with phase composition in synthesized nanopowders.

Sign in / Sign up

Export Citation Format

Share Document