Impact of preparation temperature on the structure, optical and electronic characteristics of Zn0.9V0.1S nanoparticles with Williamson-Hall model mechanistic view

Mohamed, Mohamed Bakr; Badawi, Ali

doi:10.1007/s00339-022-05607-9

Cited by 9 publications

(2 citation statements)

References 39 publications

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“…Similar results were obtained as Co doped CdS prepared by coprecipitation route. 1 Furthermore, The material's suitability for use in magneto recording devices increases as the remanence ratio (R) value rises. 41,42 The remanence ratio (R) provides information about the intergrain group exchange mechanism, which depends on the intergrain group exchange.…”

Section: Resultsmentioning

confidence: 99%

“…II-VI-based chalcogenides, such as sulfides, selenides, and tellurides, have received a lot of attention. [1][2][3] Over the past two decades, they played a vital role in spintronic applications, solar-energy conversion, non-linear optics and photochemical catalysis. 4 Among the transition metal chalcogenides, CdS, pure and doped, is a promising candidate for technological applications, because of its nonlinear optical and luminescence properties and as a diluted magnetic semiconductors (DMS).…”

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confidence: 99%

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Impact of Cobalt-Doping on the Optical, Magnetic, and Electronic Features of Hexagonal Cadmium Sulfide

Heiba,

Abd Ellatief,

Mohamed

et al. 2024

ECS J. Solid State Sci. Technol.

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CdS and Cd0.9Co0.1S samples were prepared under an N2 atmosphere. The structural analysis was conducted using X-ray diffraction. The structural and microstructure parameters were determined using Rietveld refinement method. The incorporation of cobalt ions into CdS matrix was confirmed by energy-dispersive spectroscopy and Fourier-transform infrared analysis. CdS sample has a non-magnetic feature while the Co-doped sample exhibited a magnetic behavior. The origin of magnetic property transformation has been investigated, revealing the emergence of ferromagnetic ordering and the conversion to a diluted magnetic semiconductor (DMS) with a calculated magnetic moment of 2.56 μB upon Co doping. We also investigated how this Cobalt-doping-driven transformation affected optical, photoluminescence, and electronic properties. These effects correlated with the emergence of hyper-deep defect states. Electronic properties were calculated using density functional theory (DFT) with the HSE06 hybrid functional approximation. The calculated energy bandgaps for both Co-doped and pure CdS were 2.13 and 2.12 eV, respectively, while experimental measurements from our UV analysis yielded values of 2.26 and 2.15 eV. DFT calculations were employed to explore the magnetic properties, absorption coefficients, refractive indices, real and imaginary dielectric components, and energy loss spectra in both samples.

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Section: Resultsmentioning

confidence: 99%

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confidence: 99%