Energy band bowing parameter in MgZnO alloys

2015 ◽  
Vol 107 (2) ◽  
pp. 022111 ◽  
Author(s):  
Xu Wang ◽  
Katsuhiko Saito ◽  
Tooru Tanaka ◽  
Mitsuhiro Nishio ◽  
Takashi Nagaoka ◽  
...  
Keyword(s):  
Energy Band ◽  
Bowing Parameter

Energy band‐gap bowing parameter in an AlxGa1−xN alloy

1987 ◽  
Vol 61 (9) ◽  
pp. 4540-4543 ◽  
Author(s):  
Y. Koide ◽  
H. Itoh ◽  
M. R. H. Khan ◽  
K. Hiramatu ◽  
N. Sawaki ◽  
...  
Keyword(s):  
Band Gap ◽  
Energy Band ◽  
Energy Band Gap ◽  
Bowing Parameter

scholarly journals Energy band bowing parameter in AlxGa1−xN alloys

2002 ◽  
Vol 92 (8) ◽  
pp. 4837-4839 ◽  
Author(s):  
Feng Yun ◽  
Michael A. Reshchikov ◽  
Lei He ◽  
Thomas King ◽  
Hadis Morkoç ◽  
...  
Keyword(s):  
Energy Band ◽  
Bowing Parameter

ENERGY BAND-GAPS OF MgxZn1-xSe: VIOLATION OF VEGARD'S LAW

2004 ◽  
Vol 18 (01) ◽  
pp. 137-142 ◽  
Author(s):  
Z. CHARIFI ◽  
H. BAAZIZ ◽  
N. BOUARISSA
Keyword(s):  
Energy Band ◽  
Composition Dependence ◽  
Composition Range ◽  
Band Gaps ◽  
Ternary Alloys ◽  
Lattice Constants ◽  
Bowing Parameter ◽  
Zinc Blende ◽  
System Transition ◽  
Vegard’S Law

Based on a pseudopotential scheme, the composition dependence of energy band-gaps of zinc-blende Mg x Zn 1-x Se ternary alloys in the composition range of 0≤x≤1 are determined. The effect of deviation of lattice constants of the alloys of interest from Vegard's law on the optical bowing parameter and system transition between the direct and indirect structures is discussed.

Correlation Between Lattice Strain and Energy Gap Bowing of AlxGa1-xN Epitaxial Thin Films

2009 ◽  
Vol 610-613 ◽  
pp. 598-603
Author(s):  
Lan Zhao ◽  
Zheng Xiong Lu ◽  
Cai Jing Cheng ◽  
De Gang Zhao ◽  
Jian Jun Zhu ◽  
...  
Keyword(s):  
Thin Films ◽  
Band Gap ◽  
Energy Band ◽  
Lattice Strain ◽  
Energy Gap ◽  
Lattice Mismatch ◽  
Lattice Relaxation ◽  
Epitaxial Thin Films ◽  
Energy Band Gap ◽  
Bowing Parameter

The correlation between the energy band-gap of AlxGa1-xN epitaxial thin films and lattice strain was investigated using both High Resolution X-ray Diffraction (HRXRD) and Spectroscopic Ellipsometry (SE). The Al fraction, lattice relaxation, and elastic lattice strain were determined for all AlxGa1-xN epilayers, and the energy gap as well. Given the type of intermediate layer, a correlation trend was found between energy band-gap bowing parameter and lattice mismatch, the higher the lattice mismatch is, the smaller the bowing parameter (b) will be.

Acoustical Properties of Speech as Indicators of Depression and Suicidal Risk

2008 ◽  
Vol 4 ◽  
Author(s):  
Michael Joshua Landau
Keyword(s):  
Multiple Regression ◽  
Energy Band ◽  
Mental States ◽  
Cross Product ◽  
Female Group ◽  
Suicidal Risk ◽  
Energy Bands ◽  
Band Ratio ◽  
Acoustical Properties ◽  
Male Group

Acoustical properties of speech have been shown to be related to mental states such as remission and depression. The objective of this project was to relate the energy in frequency bands with the severity of the mental state using the Beck Depression Inventory (BDI). Recorded speech was obtained from male and female subjects with mental states of remission, depression, and suicidal risk. These subjects had recorded automated and spontaneous speech samples. Multiple regression analysis was used to relate the independent energy band ratio variables with the dependent BDI scores, and thus allow the determination of equitable BDI scores for future patients. For the male group, the square of the 3rd energy band and the cross-product of the 2nd and 3rd energy band were prominent in both the reading and interviewed groups. Therefore the equation with the 2nd lowest Akaike Information Criterion (AIC) score was chosen for the reading male group, and the 1st lowest AIC score was chosen for the interviewed male group. For the female group, the square and cross-product of the 1st and 2nd energy bands were prominent in both the reading and interviewed groups. Therefore the 2nd lowest AIC score was chosen for the reading female group, and the 1st lowest AIC score was chosen for the interviewed female group. The clinician could thus determine the patient’s mood or state of mind by comparing the estimated BDI score with the ranges of total BDI scores: remitted 0 – 20, depressed 15 – 38, suicidal 38 – 46. Keywords: speech, mental states, power spectra, multiple regression, information theoretic criterion

Electronic energy band structure of the actinide metals. Final report

1973 ◽  
Author(s):  
A. J. Freeman ◽  
D. D. Koelling
Keyword(s):  
Band Structure ◽  
Energy Band ◽  
Electronic Energy ◽  
Energy Band Structure ◽  
Final Report ◽  
Electronic Energy Band

energy band

2000 ◽  
pp. 523-523
Author(s):  
Martin H. Weik
Keyword(s):  
Energy Band
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