Defect induced room temperature ferromagnetism and optical properties of (Co, Y) co-doped ZnO nanoparticles

Bhakta, N.; Chakrabarti, P.K.

doi:10.1016/j.jmmm.2019.03.106

Cited by 31 publications

(7 citation statements)

References 41 publications

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“…All samples had different impurity-based peaks in the range between 600-1200cm -1 , indicating TM clusters on the ZnO surface [24]. The bond between 500-550 cm -1 was associated with stretching vibration mode of ZnO samples [25].…”

Section: Ftir Spectrum Of the Samplesmentioning

confidence: 95%

Geçiş Metali Katkılı ZnO’in Ferromanyetizma ve Büyüme Korelasyonunun İncelenmesi

Sarf

Asikuzun

Yakar

2021

International Journal of Advances in Engineering and Pure Sciences

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In this study, a series of 3d transition metal (TM) (Co, Ni and Fe) doped ZnO particles synthesized by simple co-precipitation method. Structural, morphological and magnetic properties were investigated to determine correlation between growth process and ferromagnetism of metal doped ZnO samples. All samples had ZnO hexzagonal würtzite structure and slightly shift of ZnO indexed peaks was observed by TM incorporation in ZnO. Although ZnO samples had granular forms, agglomerative forms had emerged in TM:ZnO samples due to the fast growth process. The pure ZnO sample transformed paramagnetic to ferromagnetic by TM incorporation due to carrier mediated exchange interaction between TM ions. The results demonstated that doping with Fe 3+ ions in ZnO structure had enhanced ferromagnetism although fast growth and high particle agglomeration.

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Section: Ftir Spectrum Of the Samplesmentioning

confidence: 95%

Geçiş Metali Katkılı ZnO’in Ferromanyetizma ve Büyüme Korelasyonunun İncelenmesi

Sarf

Asikuzun

Yakar

2021

International Journal of Advances in Engineering and Pure Sciences

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“…The higher fluorescence intensity of CoO-ZnO shows that OH radicals are more radially produced in the presence of CoO-ZnO leading to enhanced photocatalytic activity. 14,15,[62][63][64][65][66] The reaction mechanism discussed above is outlined below. CoOÀZnO + Irradiation -CB(h + ) + VB(e À ) ( 2)…”

Section: Photocatalytic Mechanism and Kineticsmentioning

confidence: 99%

Synthesis of a CoO–ZnO photocatalyst for enhanced visible-light assisted photodegradation of methylene blue

et al. 2022

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“…Figure 3 shows the unit cell structure of Mn 5 and Mn 10 nanostructure in a polyhedral representation. The length of the Zn-Zn, Zn-O, and O-O bonds along the c-axis as well as the off c-axis and O-Zn-O and Zn-O-Zn bond angles extracted from the structural analysis [25,26]. All calculated geometric parameters, as well as the structure and lattice parameters obtained from the Rietveld analysis, are listed in table 1.…”

Section: Structural Propertiesmentioning

confidence: 99%

Green synthesis of Mn_xZn_(1−x)O nanostructure using Azadirachta indica leaf extract and its microstructural and optical study

Barman¹,

Sikdar²,

Biswas³

et al. 2022

Phys. Scr.

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Zinc Oxide (ZnO) nanostructure doped with manganese (Mn: 5% and 10%) were prepared by the green synthesis method using the leaf extracts of Azadirachta indica. The microstructural investigation of the prepared nanopowders was carried out with the Rietveld refinement of the X-ray diffraction data. The phase analysis of the X-ray diffraction data confirmed that the synthesized nanoparticles have the hexagonal wurtzite structure in all cases. The Williamson Hall method was used to analyze the data obtained after the Rietveld refinement analysis to find some important microstructural parameters such as crystallite size, strain, stress and energy density. The size of the crystallites is almost the same in both cases and the values for strain, stress, and energy density increase with increasing Mn concentration. Functional groups and molecular interactions were identified by the Fourier Transform Infra-Red spectroscopy spectra. UV-visible spectra show that the band gap energy decreases with increasing Mn content. This property can help to fabricate a photodetector that can operate at a wavelength longer than the cut-off wavelength of ZnO. The morphology of the synthesized nanostructure was studied by field emission scanning electron microscope. The energy dispersive X-ray spectroscopy data confirm the elemental compositions in the synthesized Mn-doped ZnO, which means that the desired nanostructures were successfully synthesized by the green method.

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Defect induced room temperature ferromagnetism and optical properties of (Co, Y) co-doped ZnO nanoparticles

Cited by 31 publications

References 41 publications

Geçiş Metali Katkılı ZnO’in Ferromanyetizma ve Büyüme Korelasyonunun İncelenmesi

Geçiş Metali Katkılı ZnO’in Ferromanyetizma ve Büyüme Korelasyonunun İncelenmesi

Synthesis of a CoO–ZnO photocatalyst for enhanced visible-light assisted photodegradation of methylene blue

Green synthesis of Mn_xZn_(1−x)O nanostructure using Azadirachta indica leaf extract and its microstructural and optical study

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Defect induced room temperature ferromagnetism and optical properties of (Co, Y) co-doped ZnO nanoparticles

Cited by 31 publications

References 41 publications

Geçiş Metali Katkılı ZnO’in Ferromanyetizma ve Büyüme Korelasyonunun İncelenmesi

Geçiş Metali Katkılı ZnO’in Ferromanyetizma ve Büyüme Korelasyonunun İncelenmesi

Synthesis of a CoO–ZnO photocatalyst for enhanced visible-light assisted photodegradation of methylene blue

Green synthesis of MnxZn(1−x)O nanostructure using Azadirachta indica leaf extract and its microstructural and optical study

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Product

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Green synthesis of Mn_xZn_(1−x)O nanostructure using Azadirachta indica leaf extract and its microstructural and optical study