Mn-Doping Effects on Structure and Magnetic Properties of ZnO Nanoparticles

Ramos, J. E.; Montero-Muñoz, M.; Coaquira, J. A. H.; Páez, Jorge Enrique Rodríguez

doi:10.1007/s10909-014-1246-x

Cited by 8 publications

(3 citation statements)

References 20 publications

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“…On the other hand, as Mn-doping increased from 0.10 to 0.25, impurity peaks belonging to hetaerolite (ZnMn 2 O 4 ) with tetragonal symmetry with reference code 01-071-2499 were observed. The previous report showed that impurity of ZnMn 2 O 4 was found in 30% Mn-doped ZnO [27] and 10% Mn-doped ZnO which was prepared by coprecipitation method [28]. Rietveld analysis The crystallographic lattice parameter, cell volume, x-ray density, grain size, and phase weight fraction obtained from Rietveld refinement analysis are listed in Table . 1.…”

Section: Phase Analysismentioning

confidence: 99%

“…The EDP with much smaller beam compared to the XRD is reported as an essential instrument to explore the crystal structure of Mn-doped ZnO nanoparticles to support the XRD data. It has so far been reported the successful syntheses of Mn doped ZnO nanoparticles analyzed using XRD, namely Zn (1-x) Mn x O with x = 0.01, 0.06, 0.09, 0.12, 0.25 having the structure of single phase hexagonal, while one with x = 0.30 producing ZnMn 2 O 4 secondary phase [27], and that with x = 0.10 appearing Mn 3 O 4 phase [28]. Furthermore, the Zn (1-x) Mn x O (x = 0.00, 0.05, 0.10 and 0.15) does not appear any impurity [29].…”

Section: Introductionmentioning

confidence: 99%

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Crystallography, Impurities and Magnetic Properties of Mn-Doped ZnO Nanoparticles Prepared by Coprecipitation Method

Harsono

Wardana

Sonief

et al. 2015

JNanoR

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Introduction of Mn2+ions into ZnO in the form of Zn(1-x)MnxO (0.00≤x≤0.25) has been done by means of coprecipitation method at low temperature using Zn(CH3COO)2·2H2O, Mn(CH3COO)2·4H2O, HCl, and NH4OH as starting materials. The XRD analysis showed that the produced Zn(1-x)MnxO (0.00≤x≤0.09) samples were crystallized in single phase of wurtzite with hexagonal structures. Besides the wurtzite, the presence of the secondary phase of hetaerolite ZnMn2O4with tetragonal structures was detected in the samples having 0.10≤x≤0.25. The nanometer-sized Zn(1-x)MnxO crystals obtained from XRD analysis were well confirmed by SEM and TEM images. The electron diffraction data showed that the secondary phase formed even for 0.01 and 0.10 Mn-doping samples were ZnMn2O4and MnO2. The VSM data indicate that the paramagnetic properties of Mn doping occurred at 0.00≤x≤0.06 and 0.10≤x≤0.25 as well as superparamagnetic properties occur in Mn doping 0.07≤x≤0.09. The most interesting fact in this study was the formation of secondary phases in all Mn-doped ZnO samples, even for the smallest x of 0.01.

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Section: Phase Analysismentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Crystallography, Impurities and Magnetic Properties of Mn-Doped ZnO Nanoparticles Prepared by Coprecipitation Method

Harsono

Wardana

Sonief

et al. 2015

JNanoR

View full text Add to dashboard Cite

show abstract

“…It is observed that the peak intensity for (002) remained constant, while that for (100) and (101) got decreased with increase in temperature from 300 to 500 o C. These changes in the peak intensity suggest the changes the leaf nanostructures to spherical nanostructures. The lattice constants, crystalline sizes, dislocation density, microstrain were calculated by the XRD pattern data [20][21][22][23] as listed in Table 1.…”

Section: Xrd Analysismentioning

confidence: 99%

Low-cost nebulizer spray deposited conduction mechanism of thin film ZnO nanoparticles

Amudhavalli¹,

Mariappan²,

Prasath³

2023

JOR

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The Zinc Oxide (ZnO) thin films have been deposited on glass substrate at different temperature from 300 to 500 o C by nebulizer spray pyrolysis technique. The prepared films were characterized by X-Ray diffraction (XRD), High resolution scanning electron microscope (HRSEM), Energy dispersive analysis by X-rays (EDAX), Photoluminescence (PL), UV-Vis-NIR spectrometer and impedance spectroscopy, respectively. The XRD confirms that the films are polycrystalline in nature with hexagonal wurtzite crystal structure with (002) plane as preferential orientation. The various parameters such as crystallite size, micro strain, and dislocation density were calculated from X-ray diffraction. HR-SEM images show smooth, tiny grains and dense morphology. The PL studies exhibits two emission peaks one at 389 nm corresponding to band gap excitonic emission and another located at 490 nm due to the presence of singly ionized oxygen vacancies. The UV-Vis-NIR spectrometer confirms the possibility of good transparent ZnO films with an average transmission of about ~85-95% in the visible region and optical band gap shifted from 3.37 eV to 3.2 eV with increase in temperature and which is supported by PL study. The semiconductor bahaviour and activation energy of these films have been confirmed by impedance spectroscopy measurements.

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Triangular CdS nanostructure: effect of Mn doping on photoluminescence, electron spin resonance, and magneto-optical properties

et al. 2017

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Mn-Doping Effects on Structure and Magnetic Properties of ZnO Nanoparticles

Cited by 8 publications

References 20 publications

Crystallography, Impurities and Magnetic Properties of Mn-Doped ZnO Nanoparticles Prepared by Coprecipitation Method

Crystallography, Impurities and Magnetic Properties of Mn-Doped ZnO Nanoparticles Prepared by Coprecipitation Method

Low-cost nebulizer spray deposited conduction mechanism of thin film ZnO nanoparticles

Triangular CdS nanostructure: effect of Mn doping on photoluminescence, electron spin resonance, and magneto-optical properties

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