Structural, FTIR, optical, mechanical and magnetic properties of Zn1−xFexO with various Fe nanopowder additions

Mohamed, Mansour; Sedky, A.; Alshammari, Abdullah S.; Alshammari, Marzook S.; Khan, Ziaul Raza; Bouzidi, M.; Gandouzi, M.

doi:10.1007/s00339-022-05506-z

Cited by 11 publications

(2 citation statements)

References 100 publications

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“…The increase of unit cell volume with the nickel composition is in accord with the rise of magnetic interaction and lattice strain [71]. The FM configuration of Cd 34 ZnNiS 36 alloys gives a theoretical magnetic moment of nickel in the unit cell equals to m 1.8 , B which is close to the experimental value m 1.6 B [72] and with our recent work in CuNiO GGA+U study [73]. The switch to the FM character by incorporation of nickel in the CdZnS matrix can be attributed to the high magnetic moment of the Ni atom due to the splitting of the localized state (3d 8 ), especially since the remaining atoms are nonmagnetic.…”

Section: Structural Optimizationsupporting

confidence: 86%

Experimental and DFT studies of structural and optoelectronic properties of CdS, Zn doped CdS, and (Zn-Ni) co-doping CdS nanomaterials

Gandouzi,

Alshammary,

Khan

et al. 2024

Phys. Scr.

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This paper presents experimental and theoretical studies of binary semiconductor CdS, Zn:CdS, and (Zn-Ni) co-doped CdS. Thin films of pure CdS, Cd35ZnS36, and Cd34ZnNiS36 alloys grown by sol-gel spin coating were analyzed using X-ray diffraction, EDX, and UV-vis spectroscopy. The experimental results show the success of growing nanomaterials in hexagonal structures with crystallite sizes ranging from 1.6 to 2.11 nm and possessing band gaps in the region 2.30 -2.49 eV. Additionally, we investigate the structural and optoelectronic properties of these materials in the ground state using the density functional theory implemented in the WIEN2k software. The first principles calculations confirmed that the structural and optical properties of CdS align with the experimental results. For nanostructure Cd35ZnS36, the lattice parameters decrease, and the band gap increases to 2.85 eV with Zn doping. The (Zn-Ni) co-doped CdS structure optimization shows that the ferromagnetic configuration is more stable than the non-magnetic structure. The spin-polarized band structure investigations reveal that the majority spin-up channel is about 2.79 eV while the minority spin-down channel is around 2.19 eV. These results increase the importance of Zn:CdS and CdZnNiS alloys for optoelectronic and spintronic applications. The calculated optical properties of CdS, Zn:CdS, and (Zn-Ni) co-doped CdS show slight changes in refractive index and extinction coefficient with the doping and a quantitative agreement with the experimental findings.

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Section: Structural Optimizationsupporting

confidence: 86%

Experimental and DFT studies of structural and optoelectronic properties of CdS, Zn doped CdS, and (Zn-Ni) co-doping CdS nanomaterials

Gandouzi,

Alshammary,

Khan

et al. 2024

Phys. Scr.

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“…Figure 3(a) shows optical absorbance (A) against wavelengths (λ) for SnO 2 , Cu/SnO 2 , and Fe/SnO 2 composites. The curves show a remarkable decrease in A as the wavelength increases within the UV region (220-400 nm), which is caused by improving the free carrier density [43]. The values of A drop, in general, for the Cu/SnO 2 and Fe/SnO 2 composites, and the rate of reduction is higher for the Cu/SnO 2 in…”

Section: Optical Propertiesmentioning

confidence: 94%

Structural, optical, and dielectric properties of hydrothermally synthesized SnO₂ nanoparticles, Cu/SnO₂, and Fe/SnO₂ nanocomposites

Sedky,

Afify,

Hakamy

et al. 2023

Phys. Scr.

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The structural and optical properties, as well as dielectric characteristics at various frequencies (0.1 Hz—20 MHz) and temperatures, T (300–400 K), of hydrothermally synthesized SnO2 nanoparticles, Cu/SnO2, and Fe/SnO2 composites have been investigated. The crystal structure is mostly formed of a tetragonal SnO2 phase, with a second phase of monoclinic CuO or rhombohedral Fe2O3 detected in Cu/SnO2, and Fe/SnO2 composites, respectively. The direct optical band gap, residual dielectric constant, and density of charge carriers are increased, while ac conductivity (σ ac) and dielectric constant decreased in Cu/SnO2 and Fe/SnO2. The value of σ ac was decreased while the electric Q-factor was increased by increasing T. SnO2 obeyed the hole-conduction mechanism for 400 ≥ T (K) ≥ 300, while Cu/SnO2 and Fe/SnO2 obeyed the electronic-conduction mechanism for 400 ≥ T (K) > 300. The binding energy is independent of T for SnO2, whereas it increases with rising T for Cu/SnO2 and Fe/SnO2 composites. F-factor and electronic polarizability are improved by a rise of T for SnO2 and Cu/SnO2 meanwhile are decreased for Fe/SnO2. The electrical impedance of the grains and their boundaries as well as equivalent capacitance are increased by increasing T and have higher values for Fe/SnO2 at T > 300 K. The obtained results recommend the synthesized Cu/SnO2 and Fe/SnO2 composites to be used as catalysts for water purification, anodes for lithium batteries, supercapacitors, and solar cell applications amongst others.

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Structural, FTIR, optical and photoluminescence investigation of Zn1-xRExO nanoparticles for optical and power operation devices

et al. 2022

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Structural, FTIR, optical, mechanical and magnetic properties of Zn1−xFexO with various Fe nanopowder additions

Cited by 11 publications

References 100 publications

Experimental and DFT studies of structural and optoelectronic properties of CdS, Zn doped CdS, and (Zn-Ni) co-doping CdS nanomaterials

Experimental and DFT studies of structural and optoelectronic properties of CdS, Zn doped CdS, and (Zn-Ni) co-doping CdS nanomaterials

Structural, optical, and dielectric properties of hydrothermally synthesized SnO₂ nanoparticles, Cu/SnO₂, and Fe/SnO₂ nanocomposites

Structural, FTIR, optical and photoluminescence investigation of Zn1-xRExO nanoparticles for optical and power operation devices

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Structural, FTIR, optical, mechanical and magnetic properties of Zn1−xFexO with various Fe nanopowder additions

Cited by 11 publications

References 100 publications

Experimental and DFT studies of structural and optoelectronic properties of CdS, Zn doped CdS, and (Zn-Ni) co-doping CdS nanomaterials

Experimental and DFT studies of structural and optoelectronic properties of CdS, Zn doped CdS, and (Zn-Ni) co-doping CdS nanomaterials

Structural, optical, and dielectric properties of hydrothermally synthesized SnO2 nanoparticles, Cu/SnO2, and Fe/SnO2 nanocomposites

Structural, FTIR, optical and photoluminescence investigation of Zn1-xRExO nanoparticles for optical and power operation devices

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Structural, optical, and dielectric properties of hydrothermally synthesized SnO₂ nanoparticles, Cu/SnO₂, and Fe/SnO₂ nanocomposites