scholarly journals Ionicity and birefringence of α-LiNH4SO4crystals: ab initio DFT study, X-ray spectroscopy measurements

RSC Advances ◽  
2017 ◽  
Vol 7 (12) ◽  
pp. 6889-6901 ◽  
Author(s):  
M. Ya. Rudysh ◽  
M. G. Brik ◽  
O. Y. Khyzhun ◽  
A. O. Fedorchuk ◽  
I. V. Kityk ◽  
...  
Keyword(s):  
Band Structure ◽  
Ab Initio ◽  
Electronic Properties ◽  
First Principles ◽  
Experimental Studies ◽  
Dft Study ◽  
X Ray ◽  
Complex Approach ◽  
Ab Initio Dft

The structural, electronic properties and ionicity of the α-LiNH4SO4dielectric crystals are examined using a complex approach: experimental studies of X-ray spectroscopy and the first principles band structure techniques within a framework of DFT.

scholarly journals Structural and electronic properties of the spinel Li4Ti5O12

2019 ◽  
Vol 20 (46) ◽  
pp. 7-12 ◽  
Author(s):  
Sarantuya Lkhagvajav ◽  
Namsrai Tsogbadrakh ◽  
Enkhjargal Enkhbayar ◽  
Sevjidsuren Galsan ◽  
Pagvajav Altantsog
Keyword(s):  
Electronic Properties ◽  
First Principles ◽  
Density Functional ◽  
Experimental Studies ◽  
First Principles Calculations ◽  
X Ray Diffraction ◽  
X Ray ◽  
Structural And Electronic Properties ◽  
Hubbard U ◽  
Uv Visible

In this study, the structure and electronic properties of the spinel compound Li4Ti5O12 (LTO) are investigated both theoretical and experimental methods. The experimental studies of structural and electronic properties were performed by X-ray diffraction and UV-visible spectroscopy. The first principles calculations allowed to establish the relationship between the structure and electronic properties. The spinel type structure of LTO is refined by the Rietveld analysis using the X-ray diffraction (XRD). The band gap of LTO was determined to be 3.55 eV using the UV-visible absorption spectra. The Density functional theory (DFT) augmented without and with the Hubbard U correction (GGA and GGA +U+J0) is used to elucidate the electronic structure of LTO. We have performed systematic studies of the first principles calculations based on the GGA and GGA+U for the crystal structure and electronic properties of spinel LTO. We propose that a Hubbard U correction improves the DFT results.

scholarly journals Halide (Cl-, Br-, I-) Influence on the Electronic Properties of Macrocyclic Nickel(II) Complexes: Ab-initio DFT Study

2013 ◽  
Vol 57 (3) ◽  
pp. 311-315 ◽  
Author(s):  
Seyed Amir Zarei ◽  
Keivan Akhtari ◽  
Keyumars Hassanzadeh ◽  
Mohammad Piltan ◽  
Saadi Saaidpour ◽  
...  
Keyword(s):  
Ab Initio ◽  
Electronic Properties ◽  
Dft Study ◽  
Macrocyclic Nickel ◽  
Ab Initio Dft

scholarly journals Intrinsic defects in and electronic properties of θ-Al13Fe4: an ab initio DFT study

2019 ◽  
Vol 2 (1) ◽  
pp. 015004 ◽  
Author(s):  
C M Fang ◽  
A Dinsdale ◽  
Z P Que ◽  
Z Fan
Keyword(s):  
Ab Initio ◽  
Electronic Properties ◽  
Dft Study ◽  
Intrinsic Defects ◽  
Ab Initio Dft

scholarly journals First principles DFT study of interstitial hydrogen and oxygen atoms in the MAX phase Ti2AlN

RSC Advances ◽  
2017 ◽  
Vol 7 (60) ◽  
pp. 37852-37857 ◽  
Author(s):  
Francesco Colonna ◽  
Christian Elsässer
Keyword(s):  
Ab Initio ◽  
Corrosion Protection ◽  
First Principles ◽  
Dft Study ◽  
Max Phase ◽  
Oxygen Absorption ◽  
Protection Potential ◽  
And Diffusion ◽  
Interstitial Hydrogen ◽  
Oxygen Atoms

We model hydrogen and oxygen absorption and diffusion in Ti2AlN via ab initio simulations to assess its corrosion protection potential.

scholarly journals Ab initio DFT study of ideal shear strength of polytypes of silicon carbide

2008 ◽  
Vol 40 (1) ◽  
pp. 2-6 ◽  
Author(s):  
Y. Umeno ◽  
Y. Kinoshita ◽  
T. Kitamura
Keyword(s):  
Silicon Carbide ◽  
Shear Strength ◽  
Ab Initio ◽  
Dft Study ◽  
Ab Initio Dft
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