Optical Properties of BN and BBi Compounds

Yalcin, Battal G.; Ustundag, M.; Aslan, Metin

doi:10.12693/aphyspola.125.574

Cited by 3 publications

(2 citation statements)

References 18 publications

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“…The values of refractive index n of this compound obtained from the relations of equations (2) and (3) and the value 0.73eV of the average energy gap obtained initially from first principles calculations are equal to: 3.441 and 3.254 respectively, they are relatively lower than the value of 4.39 obtained by Yalcin et al [17]. The refractive index versus the plasmon energy (ћω p ), the force constants (α and β) and the lattice energy (U) for some groups A II B VI and A III B V semiconductors can be given by the following empirical relations [13]:…”

Section: Refractive Index Plasmon Energy Force Constants and Latticcontrasting

confidence: 52%

“…(13). The values of high-frequency dielectric constant are very lower than the previously calculated data (19.27) obtained by Yalcin et al [17] and the value (14.49) of Bouamama et al [23]. For linear optical materials at lower light-intensity levels, the macroscopic polarization P induced by light propagating in the medium is proportional to the electric field E, they are related by the following formula:…”

Section: Homopolar and Heteropolar Energies Dielectric Constant And mentioning

confidence: 64%

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Optoelectronic and thermal properties of boron-bismuth compound

Daoud¹,

Bioud²,

Labgaa³

et al. 2014

International Journal of Physical Research

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In the present work, we report first principles calculations of the near-neighbor distance (bond length) and the average energy gap using the pseudopotential plane wave method, in the framework of the density functional theory (DFT) within the local density approximation (LDA) and the Hartwigzen-Goedecker-Hutter (HGH) scheme for the pseudopotential of Boron-Bismuth compound in its structure zincblende phase. The refractive index, the plasmon energy, the force constants, the lattice energy, the homopolar and heteropolar energies, the ionicity, the linear optical susceptibility, the hardness, the dielectric constants, the Debye temperature and the melting temperature are then predicted by mean of some simple emperical formulas. The results obtained are analyzed and compared with the available theoretical data of the literature

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Section: Refractive Index Plasmon Energy Force Constants and Latticcontrasting

confidence: 52%

Section: Homopolar and Heteropolar Energies Dielectric Constant And mentioning

confidence: 64%

Optoelectronic and thermal properties of boron-bismuth compound

Daoud¹,

Bioud²,

Labgaa³

et al. 2014

International Journal of Physical Research

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First principle studies on the structural, thermodynamic and optoelectronic properties of Boron Bismuth: A promising candidate for mid-infrared optoelectronic applications

Mal

Mahato

Tiwari

et al. 2021

Materials Science in Semiconductor Processing

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Interface Modification of Substrate for Enhancing Adhesive Strength of CVD Diamond Coating by Solid Particles

Cao

et al. 2022

Surf. Rev. Lett.

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The strong adhesive strength is essential for the widespread applications of diamond coating in the mechanical field. In this paper, a novel method combining conventional chemical vapor deposition (CVD) diamond technique with solid particles was proposed to modify the interface material properties of substrate to improve the adhesive strength of the diamond coating. Prior to deposition, wet dispersion was adopted to uniformly distribute solid particles on the substrate, with which the diamond coatings with the WC, TiC and BN particles embedded at the interface were fabricated on Co-cemented tungsten carbide (WC-Co) substrate. In addition, the pure diamond coating was also fabricated for comparison. The as-deposited diamond coatings were characterized by scanning electron microscopy (SEM), atomic force microscopy (AFM), energy dispersive X-ray spectroscopy (EDS) and Raman spectroscopy. The results indicated that the diamond coating with TiC exhibited the highest residual stress, which may be due to the larger lattice mismatch between TiC and diamond as compared to WC and BN. The indentation test suggested that WC and BN particles were favorable for the improvement of the adhesive strength and the crack resistance of diamond coating, while this phenomenon was not observed in the diamond coating with TiC particle. This might be caused by the large lattice parameter, high lattice mismatch, and high thermal expansion coefficient mismatch of TiC as compared with diamond. Furthermore, the lattice parameter of additional particles might be an important factor to determine whether or not the adhesive strength of diamond coating can be enhanced, because it determined the compressive stress or tensile stress generated inside diamond coating. Hence, interface modification of substrate by dispersing the solid particles with low lattice parameter or similar material properties of diamond may be an effective and convivence approach to improve the adhesive strength of the diamond coating.

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Optical Properties of BN and BBi Compounds

Cited by 3 publications

References 18 publications

Optoelectronic and thermal properties of boron-bismuth compound

Optoelectronic and thermal properties of boron-bismuth compound

First principle studies on the structural, thermodynamic and optoelectronic properties of Boron Bismuth: A promising candidate for mid-infrared optoelectronic applications

Interface Modification of Substrate for Enhancing Adhesive Strength of CVD Diamond Coating by Solid Particles

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