High-temperature and high-pressure thermophysical properties of AlP semiconducting material: A systematic ab initio study

Daoud, Salah; Bouarissa, N.; Bioud, Nadhira; Saini, Pawan

doi:10.1016/j.chemphys.2019.110399

Cited by 15 publications

(2 citation statements)

References 53 publications

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“…The Vickers hardness HV and the shear modulus G are related by the empirical formula given as: HV = 0.1475 × G [51,52]. It is well known that the microhardness of a material change considerably as a function of dislocation density [53]. The values estimated at room temperature of the shear modulus G and the Vickers hardness HV for LaxSm1-xS (x = 0, 0.1, 0.25 and 0.35) alloys depending on the doping concentration of La are also traced in Figure 2.…”

Section: Theory and Discussion Of The Resultsmentioning

confidence: 99%

Effect of La-concentration (x) on some physical properties of LaxSm1-xS (x = 0, 0.1, 0.25 and 0.35) alloys

Benmakhlouf,

Mezouar,

Daoud

2024

Int. J. Sci. World

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In the present work, we studied the effect of the incorporation of Lanthanum (La) atoms into Samarium monosulfide (SmS) small gap mag-netic semiconductor birary compound. So some physical properties of pure (SmS) and La-doped SmS compound LaxSm1-xS (x = 0.1, 0.25 and 0.35) ternary alloys) were obtained. We found that the longitudinal wave velocity of LaxSm1-xS ternary alloys decreases monotonically and non-linearly with increasing La-concentration (x) from 0 to 35%, while the transverse and average elastic wave velocities, Debye tem-perature and Vickers Hardness for LaxSm1-xS (x = 0, 0.1, 0.25 and 0.35) ternary alloys change non-monotonically and varied non-linearly with increasing La-concentration (x). For LaxSm1-xS (x = 0.1, 0.25 and 0.35) ternary alloys, the lattice parameters and the elastic constants used here are taken from the work of Schärer and Wachter (Solid State Communications, Vol. 96, No. 7, (1995), pp. 497–501), while for SmS divalent chalcogenide birary compound, the elastic constants used here are taken from the book edited by Sirdeshmukh et al. (D. B. Sirdeshmukh, L. Sirdeshmukh, K. G. Subhadra, Micro-and macro-properties of solids, Springer-Verlag Berlin Heidelberg, 2006, page 269). The Debye temperature was calculated using two different approches (Debye’s approch and Blackman’s approch) To the best of author knowledge, there is no any data in the literature on the Debye temperature and the minimum thermal conductivity for LaxSm1-xS (x = 0.1, 0.25 and 0.35) ternary alloys to make comparaison.

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Section: Theory and Discussion Of The Resultsmentioning

confidence: 99%

Effect of La-concentration (x) on some physical properties of LaxSm1-xS (x = 0, 0.1, 0.25 and 0.35) alloys

Benmakhlouf,

Mezouar,

Daoud

2024

Int. J. Sci. World

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“…The minimum value of H was found to be 4.45 GPa for both B0.5Al0.5Sb and B0.625Al0.375Sb semiconducting alloys. Experimentally, the microhardness H of solid is infected with the density defects existing in the material [36]. Several techniques were usually used to characterize the defects in the solids, such as transmission electron microscopy (TEM), energy dispersive X-ray spectroscopy (EDX), scanning electron microscopy (SEM), and timeof-flight secondary ion mass spectrometry (TOF-SIMS) [13].…”

Section: Theory Results and Discussionmentioning

confidence: 99%

Plasmon energy and microhardness of BxAl1-xSb alloys: semi-empirical prediction

Mezouar

Logzit²

2023

IJPR

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Based on the reflective index reported in the literature, the present work aims to investigate the plasmon energy, the microhardness and the homopolar band gap energy of BxAl1-xSb ternary semiconducting alloys as a function of boron concentration x in the range 0 –1. We found that both the plasmon energy and the microhardness of BxAl1-xSb alloys change gradually but not monotonically with increasing of boron concentration x from 0 to 1, while the homopolar band gap energy increases monotonically with enhancing of x. We emphasize that a boron concentration x dependent plasmon energy and microhardness between 0 and 1 is extremely unusual behavior for BxAl1-xSb alloys. Normally, both plasmon energy and the microhardness monotonically increase with increasing boron concentration x as it was mentioned in the literature. The plasmon energy of AlSb and BSb was found to be 16.14 and 15.58 eV, respectively. Our value (16.14 eV) of the plasmon energy for AlSb compound is higher than the result (13.8 eV) reported by Böer and Pohl. The minimum of the plasmon energy was found to be 14.4 eV for both B0.5Al0.5Sb and B0.625Al0.375Sb alloys. The microhardness of AlSb was found at around 7.56 GPa, while that of BSb was found to be 6.51 GPa. Similar to the plasmon energy, the minimum value of the microhardness was found to be 4.45 GPa for both B0.5Al0.5Sb and B0.625Al0.375Sb alloys.

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Pressure-induced effects on the mechanical and thermophysical properties of LiAl2X (X = Rh, Pd, Ir and Pt) ternary intermetallic compounds

Benamrani,

Rekab-Djabri,

Bouarissa

et al. 2024

Bull Mater Sci

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High-temperature and high-pressure thermophysical properties of AlP semiconducting material: A systematic ab initio study

Cited by 15 publications

References 53 publications

Effect of La-concentration (x) on some physical properties of LaxSm1-xS (x = 0, 0.1, 0.25 and 0.35) alloys

Effect of La-concentration (x) on some physical properties of LaxSm1-xS (x = 0, 0.1, 0.25 and 0.35) alloys

Plasmon energy and microhardness of BxAl1-xSb alloys: semi-empirical prediction

Pressure-induced effects on the mechanical and thermophysical properties of LiAl2X (X = Rh, Pd, Ir and Pt) ternary intermetallic compounds

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