First principle calculations of electronic, band structural, and optical properties of BixSr1-xTiO3 perovskite

2019 ◽  
Vol 127 ◽  
pp. 107-114 ◽  
Author(s):  
Yuzhen Fang ◽  
Xiangjin Kong ◽  
Dongting Wang ◽  
Junhai Liu ◽  
Shouxin Cui
2020 ◽  
Vol 557 (1) ◽  
pp. 98-104 ◽  
Author(s):  
Husnu Koc ◽  
Selami Palaz ◽  
Sevket Simsek ◽  
Amirullah M. Mamedov ◽  
Ekmel Ozbay

In the present paper, we have investigated the electronic structure of some sillenites - Bi12MO20 (M = Ti, Ge, and Si) compounds based on the density functional theory. The mechanical and optical properties of Bi12MO20 have also been computed. The second-order elastic constants have been calculated, and the other related quantities have also been estimated in the present work. The band gap trend in Bi12MO20 can be understood from the nature of their electronic structures. The obtained electronic band structure for all Bi12MO20 compounds is semiconductor in nature. Similar to other oxides, there is a pronounced hybridization of electronic states between M-site cations and anions in Bi12MO20. Based on the obtained electronic structures, we further calculate the frequency-dependent dielectric function and other optical functions.


2019 ◽  
Vol 40 (6) ◽  
pp. 062004 ◽  
Author(s):  
Pengxiang Bai ◽  
Shiying Guo ◽  
Shengli Zhang ◽  
Hengze Qu ◽  
Wenhan Zhou ◽  
...  

2018 ◽  
Vol 122 ◽  
pp. 130-136 ◽  
Author(s):  
Qian Chen ◽  
Jie Xu ◽  
Shuyao Cao ◽  
Maosen Fu ◽  
Min Wang ◽  
...  

2021 ◽  
Vol 273 ◽  
pp. 115405
Author(s):  
Rilwan O. Balogun ◽  
Muteeu A. Olopade ◽  
Olusola O. Oyebola ◽  
Adeyinka D. Adewoyin

2019 ◽  
Vol 33 (25) ◽  
pp. 1950295
Author(s):  
Xin-Kuan Wang ◽  
Ruike Yang ◽  
Shaowei Ma ◽  
Bao Chai ◽  
Minhua Xue

Boron nitride (BN) and Titanium nitrides (TiNs) have been successfully researched recently. In order to analyze the relationship among the Boron, Nitrogen and Titanium, the ternary compounds with an orthorhombic structure Immm- are studied. We further researched on the mechanical, electronic and optical properties of new Immm-B[Formula: see text]Ti[Formula: see text]N2 ([Formula: see text]). The structures of BTi2N2 and B2TiN2 are mechanically stable at 0, 50 and 100 GPa. The BTi2N2 has the higher cutting resistance and better ductility than the B2TiN2. The higher Young’s modulus of B2TiN2 indicates the B2TiN2 is stiffer than BTi2N2. The BTi2N2 is harder to compress in the [Formula: see text] direction and the B2TiN2 is harder in [Formula: see text] direction. Immm-BTi2N2 and B2TiN2 have good metallicity at 0 and 100 GPa. Immm-BTi2N2 has the higher dielectric function than B2TiN2 and the plasma frequency of B2TiN2 is bigger than that of BTi2N2. We hope our work will provide some help to the experimental work about the technology of the material.


RSC Advances ◽  
2016 ◽  
Vol 6 (5) ◽  
pp. 3480-3486 ◽  
Author(s):  
Lili Sun ◽  
Wei Zhou ◽  
Yanyu Liu ◽  
Dandan Yu ◽  
Yinghua Liang ◽  
...  

The Fe doping can increase the visible absorption of SnS2 and extend the absorption into the infrared region.


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