Study of the optical properties of Zn doped Mn spinel ferrite nanocrystals shows multiple emission peaks in the visible range –a promising soft ferrite nanomaterial for deep blue LED

Debnath, Simi; Das, Ratan

doi:10.1016/j.molstruc.2019.127044

Cited by 48 publications

(18 citation statements)

References 82 publications

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“…The electron microscopic analysis revealed the spherical morphology and the average size of the formed ferrite nanocrystals matched with that from the X-ray diffraction analysis (Fig. 1) (Debnath and Das, 2020). R. Ghasemi et al prepared Cu 1−x Cd x Fe 2 O 4 (0 ≤ x ≤ 1) via co-perception utilizing Cd (II), Cu (II) and Fe (III) salts.…”

Section: Co-precipitationsupporting

confidence: 64%

Engineered magnetic oxides nanoparticles as efficient sorbents for wastewater remediation: a review

et al. 2021

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The rapid urbanization and industrialization is causing worldwide water pollution, calling for advanced cleaning methods. For instance, pollutant adsorption on magnetic oxides is efficient and very practical due to the easy separation from solutions by an magnetic field. Here we review the synthesis and performance of magnetic oxides such as iron oxides, spinel ferrites, and perovskite oxides for water remediation. We present structural, optical, and magnetic properties. Magnetic oxides are also promising photocatalysts for the degradation of organic pollutants. Antimicrobial activities and adsorption of heavy metals and radionucleides are also discussed.

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Section: Co-precipitationsupporting

confidence: 64%

Engineered magnetic oxides nanoparticles as efficient sorbents for wastewater remediation: a review

et al. 2021

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“…Among these three types, mixed ferrites are considered significant materials because of their wide range of tunability in properties. In recent decades, several investigations have been done to explore and enhance the magnetic and electrical properties of end member ferrites by substituting different divalent and trivalent cations using various synthesis methods [ 16 , [20] , [21] , [22] , [23] , [24] , [25] , [26] , [27] , [28] , [29] , [30] , [31] , [32] , [33] , [34] ]. Among the spinel ferrites, the Zn substituted ferrites are attracted special interest due to the strong tetrahedral site preference of Zn 2+ ion.…”

Section: Introductionmentioning

confidence: 99%

Zinc substitution effect on the structural, spectroscopic and electrical properties of nanocrystalline MnFe2O4 spinel ferrite

Murugesan

Ugendar²,

Okrasa

et al. 2021

Ceramics International

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This paper reports the structural, morphological, spectroscopic, dielectric, ac conductivity, and impedance properties of nanocrystalline Mn 1-x Zn x Fe 2 O 4 . The nanocrystalline Mn–Zn ferrites were synthesized using a solvent-free combustion reaction method. The structural analysis using X-ray diffraction (XRD) pattern reveals the single-phase of all the samples and the Rietveld refined XRD patterns confirmed the cubic-spinel structure. The calculated crystallite size values increase from 8.5 nm to 19.6 nm with the Zn concentration. The surface morphological analysis using field emission scanning electron microscopy and the transmission electron microscopy confirms the nano size of the prepared ferrites. X-ray photoelectron spectroscopy was used to study the ionic state of the atoms present in the samples. Further, the high-resolution Mn 2p, Zn 2p, Fe 2p, and O 1s spectra of Mn 1-x Zn x Fe 2 O 4 does not result in the appearance of new peaks with Zn content, indicating that the Zn substitution does not change the ionic state of Mn, Zn, Fe, and O present in nanocrystalline Mn 1-x Zn x Fe 2 O 4 . The investigated electrical properties show that the dielectric constant, tan δ and ac conductivity gradually decrease with increasing Zn substitution and the sample Mn 0 · 2 Zn 0 · 8 Fe 2 O 4 has the lowest value of conductivity at 303 K. The ac conductivity measured at different temperatures shows the semiconducting nature of the ferrites. The impedance spectra analysis shows that the contribution of grain boundary is higher compared with the grain to the resistance. The obtained results suggest that the Zn substituted manganese ferrite nanoparticles can act as a promising candidate for high-frequency electronic devices applications.

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“…[28] The emission wavelength is in the blue region of the spectra; hence, ZnFe 2 O 4 NPs may be utilized for blue LED display applications. [29] The Energy bandgap of the zinc ferrite NPs has been calculated by using the Tauc formula as shown in Equation ( 5).…”

Section: Uv-visible Absorption and Fluorescence Spectroscopic Analysismentioning

confidence: 99%

Synthesis, Characterization, and Properties of Spinel Zinc Ferrite Nanoparticles by Chemical Coprecipitation Technique

Basavanagoudra

Tanakanti²,

Patil

et al. 2021

Macromolecular Symposia

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In the present work, zinc‐ferrite [ZnFe2O4] nanoparticles (NPs) are synthesized by the chemical coprecipitation method. The x‐ray diffraction pattern affirms the arrangement of the cubic spinel structure. SEM micrographs reveal the polyhedral crystal‐like shape. FTIR spectrum confirm the characteristic functional groups present in the spinel zinc ferrite NPs. The UV‐visible absorption and fluorescence spectra confirm that zinc ferrite NPs are optically active and hence can possess potential applications in light‐harvesting and photocatalytic activity.

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Study of the optical properties of Zn doped Mn spinel ferrite nanocrystals shows multiple emission peaks in the visible range –a promising soft ferrite nanomaterial for deep blue LED

Cited by 48 publications

References 82 publications

Engineered magnetic oxides nanoparticles as efficient sorbents for wastewater remediation: a review

Engineered magnetic oxides nanoparticles as efficient sorbents for wastewater remediation: a review

Zinc substitution effect on the structural, spectroscopic and electrical properties of nanocrystalline MnFe2O4 spinel ferrite

Synthesis, Characterization, and Properties of Spinel Zinc Ferrite Nanoparticles by Chemical Coprecipitation Technique

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