Controlled inversion and surface disorder in zinc ferrite nanocrystallites and their effects on magnetic properties

Sai, Ranajit; Kulkarni, Suresh D.; Bhat, Swetha S. M.; Sundaram, Nalini G.; Bhat, Navakanta; Shivashankar, S. A.

doi:10.1039/c4ra12961j

Cited by 39 publications

(19 citation statements)

References 31 publications

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“…Magnetic measurements by Sai et al suggest that the magnetic properties of ZnFe 2 O 4 were inuenced by the size of its crystallites. 45 Note that the oxide species of smaller iron particles are easier to reduce than those of their larger counterparts. 23,46 Aer reducing the catalysts at 350 C, the dispersion of iron derived from the CO-TPD results at À70 C Fig.…”

Section: Resultsmentioning

confidence: 99%

Linear α-olefin production with Na-promoted Fe–Zn catalysts via Fischer–Tropsch synthesis

et al. 2019

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Section: Resultsmentioning

confidence: 99%

Linear α-olefin production with Na-promoted Fe–Zn catalysts via Fischer–Tropsch synthesis

et al. 2019

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“…[13][14][15][16][17][18][19] The properties of the resultant material is dependent on the preparation condition, including precursors, nature of solvent, reaction temperature and time as well as pH of the solution. [13][14][15][16][17][18][19] The properties of the resultant material is dependent on the preparation condition, including precursors, nature of solvent, reaction temperature and time as well as pH of the solution.…”

Section: Introductionmentioning

confidence: 99%

Albumin matrix assisted wet chemical synthesis of nanocrystalline MFe₂O₄ (M = Cu, Co and Zn) ferrites for visible light driven degradation of methylene blue by hydrogen peroxide

et al. 2016

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Spinel MFe 2 O 4 (M ¼ Cu, Co and Zn) ferrites have been successfully synthesized via a wet chemical process assisted by albumin matrix and employed as catalyst for methylene blue (MB) degradation. The materials have been characterized by different techniques including X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), high resolution transmission electron microscopy (HR-TEM), field emission scanning electron microscopy (FESEM), Raman spectroscopy, Mössbauer spectroscopy, vibrating sample magnetometry (VSM) and N 2 adsorption-desorption isotherm. The crystallite size is found to vary from 13 to 43 nm depending on the calcination temperature and they exhibit low BET surface area. Spherical and rod like surface morphology is obtained for porous copper and zinc ferrite. Copper and cobalt ferrite exhibit ferromagnetic properties typical of nanomaterials. On the other hand zinc ferrite shows superparamagnetic behavior. The current ferrites, specifically copper ferrite, are reported to exhibit significant catalytic activity for the photodegradation of methylene blue in the presence of H 2 O 2 under visible light. All the ferrite materials show better activity in acidic medium.

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“…Therefore, the choice of precursor material and solvent system is extremely important to attain the desired result. There are some excellent review articles [28][29][30][39][40][41] which discuss microwave-assisted synthesis of oxide nanoparticles in great depth.…”

Section: Fig 3 (A) Processing Steps For Zinc Ferrite Thin Film Depomentioning

confidence: 99%

Magnetic Nanoferrites for RF CMOS: Enabling 5G and Beyond

Sai

Shivashankar

Yamaguchi

et al. 2017

Electrochem. Soc. Interface

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The upcoming 5th generation (5G) telecommunication technology will enable realization of the full potential of the Internet-of-things (IoT) by utilizing various frequency bands, ranging from <4 GHz to 100 GHz. A brief review of the technical requirements of RF CMOS at the unveiling of the 5G system is provided. Key challenges associated with 5G are illustrated, with a focus on the need for, and state of the art of, magnetic materials, especially ferrites, in enhancing the performance of RF integrated circuits. The suitability of a low-temperature, CMOS-compatible, on-chip ferrite thin film deposition technique, which was elusive until recently, is compared with traditional deposition processes for thin ferrite films. The uniqueness of this microwave-irradiation-assisted, far-from-equilibrium, solution-based deposition technique in achieving an unusually high ferromagnetic resonance frequency is discussed. The effect of magnetic ferrite films in niche applications such as in X-band (8~12 GHz) inductors and K-band (18~40 GHz) electromagnetic noise suppressors is discussed and demonstrated.

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Controlled inversion and surface disorder in zinc ferrite nanocrystallites and their effects on magnetic properties

Abstract: A potentially useful strategy for tuning the inversion parameter in spinel nanoferrites – and thus their magnetic characteristics – is demonstrated.

Cited by 39 publications

References 31 publications

Linear α-olefin production with Na-promoted Fe–Zn catalysts via Fischer–Tropsch synthesis

Linear α-olefin production with Na-promoted Fe–Zn catalysts via Fischer–Tropsch synthesis

Albumin matrix assisted wet chemical synthesis of nanocrystalline MFe₂O₄ (M = Cu, Co and Zn) ferrites for visible light driven degradation of methylene blue by hydrogen peroxide

Magnetic Nanoferrites for RF CMOS: Enabling 5G and Beyond

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Controlled inversion and surface disorder in zinc ferrite nanocrystallites and their effects on magnetic properties

Abstract: A potentially useful strategy for tuning the inversion parameter in spinel nanoferrites – and thus their magnetic characteristics – is demonstrated.

Cited by 39 publications

References 31 publications

Linear α-olefin production with Na-promoted Fe–Zn catalysts via Fischer–Tropsch synthesis

Linear α-olefin production with Na-promoted Fe–Zn catalysts via Fischer–Tropsch synthesis

Albumin matrix assisted wet chemical synthesis of nanocrystalline MFe2O4 (M = Cu, Co and Zn) ferrites for visible light driven degradation of methylene blue by hydrogen peroxide

Magnetic Nanoferrites for RF CMOS: Enabling 5G and Beyond

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Product

Resources

About

Albumin matrix assisted wet chemical synthesis of nanocrystalline MFe₂O₄ (M = Cu, Co and Zn) ferrites for visible light driven degradation of methylene blue by hydrogen peroxide