Short-range thermal and structural properties of Ge nanocrystals

2007 ◽  
Vol 257 (1-2) ◽  
pp. 56-59 ◽  
Author(s):  
L.L. Araujo ◽  
P. Kluth ◽  
G. de M. Azevedo ◽  
M.C. Ridgway
Keyword(s):  
Structural Properties ◽  
Short Range ◽  
Ge Nanocrystals

Synthesis and structural properties of Ge nanocrystals in multilayer superlattice structure

2009 ◽  
Author(s):  
B. Zhang ◽  
S. Shrestha ◽  
P. Aliberti ◽  
M. A. Green ◽  
G. Conibeer
Keyword(s):  
Structural Properties ◽  
Superlattice Structure ◽  
Ge Nanocrystals

Differentiating between long and short range disorder in infra-red spectra: on the meaning of “crystallinity” in silica

2017 ◽  
Vol 19 (32) ◽  
pp. 21783-21790 ◽  
Author(s):  
Yotam Asscher ◽  
Gregorio Dal Sasso ◽  
Luca Nodari ◽  
Ivana Angelini ◽  
Tiziana Boffa Ballaran ◽  
...  
Keyword(s):  
Particle Size ◽  
Structural Properties ◽  
Short Range ◽  
Atomic Disorder ◽  
Infra Red

Local atomic disorder and crystallinity are structural properties that can be assessed in the crystals of quartz based on particle-size-related scattering processes in transmission infra-red spectroscopy.

Structural properties of Ge nanocrystals synthesized by a PVD nanocluster source

2012 ◽  
Vol 14 (9) ◽  
Author(s):  
S. Parola ◽  
E. Quesnel ◽  
V. Muffato ◽  
L. Guetaz ◽  
H. Szambolics ◽  
...  
Keyword(s):  
Structural Properties ◽  
Ge Nanocrystals

scholarly journals Segregation in Fe-Pd melt at 1873 K

BIBECHANA ◽  
2014 ◽  
Vol 11 ◽  
pp. 86-93
Author(s):  
SK Yadav ◽  
LN Jha ◽  
D Adhikari
Keyword(s):  
Free Energy ◽  
Melting Point ◽  
Theoretical Analysis ◽  
Structural Properties ◽  
Liquid Alloy ◽  
Short Range ◽  
Heat Of Mixing ◽  
Long Wavelength ◽  
Energy Of Mixing ◽  
Free Energy Of Mixing

The thermodynamic and structural properties of Fe-Pd liquid alloys at 1873 K have been computed using regular associated solution model. To compute these functions we have estimated the mole fractions of the complex assuming the existence of FePd3 complex in the melt. The thermodynamic properties such as free energy of mixing (GM), heat of mixing (HM), entropy of mixing (SM) and activity (a) of the melt have been estimated. To understand the microscopic structural properties, we have estimated the concentration fluctuation in long wavelength limit (Scc(0)) and the Warren-Cowley short range parameter (α1). The free energy of mixing was found to be negative at all compositions. But the heat of mixing and the entropy of mixing are found to be positive at all compositions. The equilibrium constant (K) is found be less than negative. The interaction energy parameters (w12, w13 and w23) are all found to be positive and temperature dependent. The theoretical estimation of the concentration fluctuation in long wavelength limit (SCC (0)) is found to be greater than the ideal values throughout the whole range. The theoretical analysis suggests that the Fe-Pd liquid alloy at 1873 K near the melting point is segregating (homo-coordinating) system. The Warren-Cowley short range order parameter is found to be positive which too suggest the homocoordinating (segregating) nature of the system at all compositions. The theoretical analysis also suggests that the Fe-Pd liquid alloy near melting point is weakly interacting system. DOI: http://dx.doi.org/10.3126/bibechana.v11i0.10386   BIBECHANA 11(1) (2014) 86-93

scholarly journals Thermodynamic and structural properties of K-Na liquid alloy

BIBECHANA ◽  
2012 ◽  
Vol 9 ◽  
pp. 130-135 ◽  
Author(s):  
I Koirala ◽  
IS Jha ◽  
BP Singh
Keyword(s):  
Structural Properties ◽  
Liquid Alloy ◽  
Diffusion Coefficients ◽  
Short Range ◽  
Short Range Order ◽  
Heat Of Mixing ◽  
Long Wavelength ◽  
Parameter Ratio ◽  
Energy Of Mixing ◽  
Free Energy Of Mixing

The deviation from ideal mixture behavior and concentration dependent symmetry in thermodynamic and structural properties of K-Na liquid alloy is investigated within a simple statistical model. The concentration dependence of the free energy of mixing, heat of mixing, entropy of mixing, concentration fluctuation in the long wavelength limit, Warren-Cowley short range order parameter, ratio of diffusion coefficients of Potassium-sodium alloy at 384 K and activity of the components has got special attention to show a tendency of like atom pairing in the mixture. DOI: http://dx.doi.org/10.3126/bibechana.v9i0.7187 BIBECHANA 9 (2013) 130-135

scholarly journals Structural properties of Ge nanocrystals embedded in sapphire

2006 ◽  
Vol 100 (11) ◽  
pp. 114317 ◽  
Author(s):  
I. D. Sharp ◽  
Q. Xu ◽  
D. O. Yi ◽  
C. W. Yuan ◽  
J. W. Beeman ◽  
...  
Keyword(s):  
Structural Properties ◽  
Ge Nanocrystals
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