Synthesis, Structural, and Magnetic Properties of Co-doped and Mn-doped ZnO Nanocrystalline DMS Prepared by the Facile Polyvinyl Alcohol Gel Method

Yoon, Dang‐Hyok; Muksin,; Raju, Kati

doi:10.1007/s10948-016-3731-8

Cited by 5 publications

(3 citation statements)

References 37 publications

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“…2): Y1 = 0.01256 + 0.00059Xfor ZnO sample; Y2 = 0.01341 + 0.00176Xfor ZnO:Mn-2 at.% sample; Y3 = 0.01106 + 0.00519Xfor ZnO:Mn-4 at.% sample. (11) 1,2 The angular coefficients of the approximating straight lines are positive (Fig. 2), which indicates the action of tensile stresses in the NCs.…”

Section: Resultsmentioning

confidence: 95%

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Features of the crystal structure of ZnO:Mn nanocrystals obtained by ultrasonic spray pyrolysis

et al. 2021

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Samples of ZnO and ZnO:Mn nanocrystals with Mn 2 and 4 at.% impurity concentrations obtained by ultrasonic spray pyrolysis were studied by X-ray diffraction. It was determined that the reflexes of the X-ray diffractions of the samples had a shift relative to the standard position towards large diffraction angles. This indicated the nonequilibrium state of the crystal lattice, which caused the appearance of strain stresses. Debye–Scherrer and Williamson–Hall methods were used to calculate the parameters of the crystal lattice, the size of nanocrystals, and strain stresses with different concentrations of Mn. When the concentration of Mn increased to 4 at.%, there was an increase in strain stresses in nanocrystals by 10 times in comparison with undoped ZnO. The unit cell volume of ZnO:Mn nanocrystals was significantly smaller in comparison with single-crystal ZnO, which indicated that they had their intrinsic defects.

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Section: Resultsmentioning

confidence: 95%

“…The value  in ZnO NC, which equals 15.6•10 -4 , was obtained as a result of calculations. The value  = 19.8 •10 -4 in ZnO:Mn NC with Mn concentration of 10 at.% synthesized by the sol-gel method was obtained in [11].…”

Section: Introductionmentioning

confidence: 99%

Features of the crystal structure of ZnO:Mn nanocrystals obtained by ultrasonic spray pyrolysis

et al. 2021

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“…For doping, 3d transition elements (Cr, Mn, Fe, and Co) are the preferred elements due to their unpaired electrons in the 3d shell and large magnetic moment, which can produce strong magnetic properties. A large number of studies have shown that effective transition metal doping can improve the photocatalytic performance of ZnO while presenting room temperature ferromagnetism [28,50,51]. In addition, the optical and magnetic properties of the over metal-doped ZnO system are closely related to the transition metal doping type, preparation environment, and annealing environment.…”

Section: Magnetic Propertiesmentioning

confidence: 99%

Study of La Doping on the Electronic Structure and Magneto-Optical Properties of ZnO by GGA+U Method

Zhang

Liu

et al. 2023

Crystals

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Based on the density functional theory, the effect of rare-earth La doping at different concentrations on the electronic structure, optical properties, and magnetic properties of ZnO was calculated by using the GGA+U method under the condition of spin polarization. The calculation results show that the cell of a La-doped ZnO system is distorted, resulting in a formation energy less than zero, in which case it is easy to dope. After La doping, the band gap narrows, the Fermi level enters the conduction band, and the excess carriers induced by La atoms degenerate to form n-type degenerate semiconductor materials. In the visible light region, a blue shift in the optical absorption edge of the La-doped ZnO system causes an increased average static dielectric constant, stronger polarization ability, stronger binding ability on charges, and the photoconductivity of the doped ZnO system is improved. The magnetic moment of the La-doped ZnO system is zero, so it is not magnetic.

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Magnetic and Electrical Properties of Al3+ Implanted Co–ZnO

Huang

Yang

et al. 2017

J Supercond Nov Magn

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Synthesis, Structural, and Magnetic Properties of Co-doped and Mn-doped ZnO Nanocrystalline DMS Prepared by the Facile Polyvinyl Alcohol Gel Method

Cited by 5 publications

References 37 publications

Features of the crystal structure of ZnO:Mn nanocrystals obtained by ultrasonic spray pyrolysis

Features of the crystal structure of ZnO:Mn nanocrystals obtained by ultrasonic spray pyrolysis

Study of La Doping on the Electronic Structure and Magneto-Optical Properties of ZnO by GGA+U Method

Magnetic and Electrical Properties of Al3+ Implanted Co–ZnO

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