Insulating state and metallic phase transition of heavily sodium-doped low-silica X (LSX) zeolites

2012 ◽  
Vol 73 (12) ◽  
pp. 1538-1541 ◽  
Author(s):  
Yasuo Nozue ◽  
Yusaku Amako ◽  
Ryoko Kawano ◽  
Takahiro Mizukane ◽  
Takehito Nakano
Keyword(s):  
Phase Transition ◽  
Metallic Phase

Pressure driven semi-metallic phase transition of Sb2Te3

2017 ◽  
Vol 209 ◽  
pp. 78-81 ◽  
Author(s):  
Junkai Zhang ◽  
Tingjing Hu ◽  
Jiejuan Yan ◽  
Feng Ke ◽  
Jingshu Wang ◽  
...  
Keyword(s):  
Phase Transition ◽  
Metallic Phase ◽  
Pressure Driven

Functional Metamaterials Based on Mesoscale Gold Sponges, Particulate Aggregates, and Their Composites with Dielectric Materials

2006 ◽  
Vol 964 ◽  
Author(s):  
Michael Cortie ◽  
Abbas Maaroof ◽  
Geoff B Smith
Keyword(s):  
Phase Transition ◽  
Optical Properties ◽  
Plasmon Resonance ◽  
Composite Structures ◽  
Dielectric Materials ◽  
Continuous Phase ◽  
Metallic Phase ◽  
Dipole Approximation ◽  
Functional Material ◽  
Nanoscale Composites

ABSTRACTThe optical properties of some nanoscale composites may deviate from that expected from a simple law of mixture of their individual components. In these cases the resulting structure can be considered to be a type of “metamaterial”. Here we explore some of the possibilities for nanoscale composite structures comprised of gold and VO2 – the latter being a functional material that undergoes a reversible insulator to metallic phase transition at 68°C. Two microstructures are examined: aggregates of gold nanoparticles surrounded by VO2 as the continuous phase, and its geometric inverse, mesoporous gold sponge with discontinuous VO2 inclusions. A composite, right-angled parallelepiped measuring 40×100×100 nm is taken as representative of the mixture, and calculations of the optical properties performed using the discrete dipole approximation code of Draine and Flatau. The VO2 matrix strongly attenuates the dipole-dipole plasmon resonance of the gold structure, and thermochromic switching of the remaining plasmon resonance occurs

Atomic mechanism of the semiconducting-to-metallic phase transition in single-layered MoS2

2014 ◽  
Vol 9 (5) ◽  
pp. 391-396 ◽  
Author(s):  
Yung-Chang Lin ◽  
Dumitru O. Dumcenco ◽  
Ying-Sheng Huang ◽  
Kazu Suenaga
Keyword(s):  
Phase Transition ◽  
Metallic Phase ◽  
Atomic Mechanism ◽  
Layered Mos2

Pressure-induced phase transition of SnH4: a new layered structure

RSC Advances ◽  
2016 ◽  
Vol 6 (13) ◽  
pp. 10456-10461 ◽  
Author(s):  
Huadi Zhang ◽  
Xilian Jin ◽  
Yunzhou Lv ◽  
Quan Zhuang ◽  
Ying Li ◽  
...  
Keyword(s):  
Phase Transition ◽  
High Pressure ◽  
Layered Structure ◽  
Metallic Phase

Using a structure searching technique, a new layered metallic phase for SnH4 with a C2/m symmetry was obtained at high pressure.

Pressure-induced metallic phase transition in gallium arsenide up to 24.3 GPa under hydrostatic conditions

2021 ◽  
Vol 35 (28) ◽  
Author(s):  
Xinyu Zhang ◽  
Lidong Dai ◽  
Haiying Hu ◽  
Meiling Hong
Keyword(s):  
Phase Transition ◽  
Electrical Conductivity ◽  
Gallium Arsenide ◽  
Raman Scattering ◽  
Electrical Transport ◽  
Variable Temperature ◽  
Metallic Phase ◽  
Ambient Conditions ◽  
Metallic Behavior ◽  
Recovered Sample

A series of experiments of structural, vibrational and electrical transport characterization of gallium arsenide (GaAs) have been performed up to 24.3 GPa under hydrostatic conditions in a diamond anvil cell (DAC) in conjunction with in situ Raman scattering spectroscopy, electrical conductivity measurements, high-resolution transmission electron microscopy (HRTEM) and atomic force microscopy (AFM). Upon compression, a phase transition from the zinc-blende (zb) to the orthorhombic (Cmcm) structure of GaAs was observed at 12.2 GPa through the discontinuous variations of the Raman shifts, Raman full-width at half-maximum values and electrical conductivity. Furthermore, the results of variable temperature electrical conductivity experiments confirmed that the high-pressure phase (Cmcm) exhibited one obvious metallic behavior. Upon decompression, the Raman scattering results of the recovered sample under ambient conditions indicated that the phase transition was reversible under hydrostatic conditions. The reversibility of the phase transition was further verified by HRTEM and AFM images for the recovered sample.

Optical Properties of Vanadium Dioxide Film during Semiconductive–Metallic Phase Transition

2007 ◽  
Vol 46 (No. 5) ◽  
pp. L113-L116 ◽  
Author(s):  
Hiroshi Kakiuchida ◽  
Ping Jin ◽  
Setsuo Nakao ◽  
Masato Tazawa
Keyword(s):  
Phase Transition ◽  
Optical Properties ◽  
Vanadium Dioxide ◽  
Metallic Phase ◽  
Vanadium Dioxide Film ◽  
Dioxide Film

Excited state dynamics and semiconductor-to-metallic phase transition of VO2 thin film

2004 ◽  
Vol 108 (1-4) ◽  
pp. 233-238 ◽  
Author(s):  
H. Liu ◽  
O. Vasquez ◽  
V.R. Santiago ◽  
L. Dı́az ◽  
F.E. Fernandez
Keyword(s):  
Thin Film ◽  
Phase Transition ◽  
Excited State ◽  
Metallic Phase ◽  
Excited State Dynamics
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