Spray pyrolysis deposition of NiZn ferrite thin films

Takayama, A.

doi:10.1016/j.ssi.2004.02.040

Cited by 45 publications

(20 citation statements)

References 11 publications

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“…Recently, a size and shape-dependent bactericidal properties of NPs have been explored [16,17] which has endowed an increasing interest in the synthesis method of NPs as it plays a crucial role in determining the physicochemical properties of NPs. Several synthesis methods such as co-precipitation [18], hydrothermal [19], micro-emulsion [20], spray pyrolysis [21], and sol-gel auto-combustion [22], etc., have successfully been addressed in the literature for developing ferrites of different structures and morphologies. Among these, sol-gel auto-combustion method is found to be more suitable for the fabrication of ferrite NPs on a mass scale with desired sizes and shapes.…”

Section: Introductionmentioning

confidence: 99%

Sol–gel auto-combustion mediated cobalt ferrite nanoparticles: a potential material for antimicrobial applications

et al. 2019

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In the era of nanotechnology, nanoparticles (NPs) of metals and metal oxides/chalcogenides are widely been used in medical applications where antibiotic-resistant microorganisms become a serious threat to the human health. Cobalt ferrite (CoFe 2 O 4) NPs, synthesized by a simple and cost-effective sol-gel auto-combustion method are envisaged for in vitro antimicrobial activities against Gram-positive bacteria (Bacillus subtilis; Staphylococcus aureus) and Gram-negative bacteria (Escherichia coli; Pseudomonas aeruginosa). The structure, morphology, elemental analyses and surface area of CoFe 2 O 4 NPs are initially screened. The antimicrobial efficiency of CoFe 2 O 4 NPs is found to be optimum against the Gram-negative bacteria Escherichia coli (15 mm). In addition, membrane leakage assays performed to evaluate the intracellular cytoplasmic leakage with CoFe 2 O 4 NPs demonstrate the ability to destroy the bacterial membrane integrity, confirming their antimicrobial potential.

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Section: Introductionmentioning

confidence: 99%

Sol–gel auto-combustion mediated cobalt ferrite nanoparticles: a potential material for antimicrobial applications

et al. 2019

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“…13 A model wherein the particle consists of a core with the collinear spin arrangement and a surface layer with the magnetic moment inclined to the direction of magnetization has been proposed. 13 Ferrite films are usually prepared by sputtering, 14 pulsed laser deposition, 15 and spray coating 16 processes. On the other hand, sol-gel [17][18][19] and hydrothermal 20 routes of ferrite synthesis have shown increasing importance.…”

Section: A Concept Of Microwave Heating With Ferrite Thin Filmsmentioning

confidence: 99%

Structural investigations and magnetic properties of sol-gel Ni0.5Zn0.5Fe2O4 thin films for microwave heating

Gao

Rebrov

Verhoeven

et al. 2010

Journal of Applied Physics

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Nanocrystalline Ni 0.5 Zn 0.5 Fe 2 O 4 thin films have been synthesized with various grain sizes by a sol-gel method on polycrystalline silicon substrates. The morphology, magnetic, and microwave absorption properties of the films calcined in the 673-1073 K range were studied with x-ray diffraction, scanning electron microscopy, x-ray photoelectron spectroscopy, atomic force microscopy, vibrating sample magnetometry, and evanescent microwave microscopy. All films were uniform without microcracks. Increasing the calcination temperature from 873 to 1073 K and time from 1 to 3 h resulted in an increase of the grain size from 12 to 27 nm. The saturation and remnant magnetization increased with increasing the grain size, while the coercivity demonstrated a maximum near a critical grain size of 21 nm due to the transition from monodomain to multidomain behavior. The complex permittivity of the Ni-Zn ferrite films was measured in the frequency range of 2-15 GHz. The heating behavior was studied in a multimode microwave cavity at 2.4 GHz. The highest microwave heating rate in the temperature range of 315-355 K was observed in the film close to the critical grain size.

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“…Main reasons of being ferrite samples are attracting researchers due to it's their high resistivity, applicability at higher frequency and higher corrosion resistance that makes them highly important for high frequency applications. Different methods for synthesis of ferrite powder are co-precipitation 23 , sol-gel method 22 , micro emulsion method 26 , hydrothermal 24,25 , reverse micelle 28 , precursor 27 , etc. Complex synthesis process and lower production rate are the main problems of these wet-chemical methods 29 .Sol-gel auto-combustion or auto-ignition preparation method where the chemical sol-gel and ignition process is combined.…”

Section: Introductionmentioning

confidence: 99%

Influence of pH Variation on Structural and Magnetic Properties of Ni-Zn Ferrite Nanoparticles Synthesized by Auto Combustion Method

Tyagi¹,

Ahlawat²

2017

Orient. J. Chem

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Nickel zinc ferrite (Ni 0.5 Zn 0.5 Fe 2 O 4 ) nanoparticles were synthesized via solution auto ignition combustion method. The ferrite samples were synthesized with different pH values 3, 5, 7 and 8. The as synthesized samples were calcined at 800 o C for 4 hours. These synthesized nanopowder have been characterized by XRD, SEM and VSM and effect of pH value on the properties of the ferrite samples were studied. XRD pattern confirmed that samples were crystalline in nature. Crystallite size of ferrite powder increased with increase in basic nature of ferrite nanopaticles. Crystallite size of sample was found 24.86nm, 28.10nm, 33.51nm and 39.61nm at pH values 3, 5, 7 and 8 respectively. The magnetization of samples prepared at different pH values 3, 5, 7 and 8 were found 55.490e.m.u./g, 61.420e.m.u./g, 65.541e.m.u./g and 66.512e.m.u./g respectively.

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Spray pyrolysis deposition of NiZn ferrite thin films

Cited by 45 publications

References 11 publications

Sol–gel auto-combustion mediated cobalt ferrite nanoparticles: a potential material for antimicrobial applications

Sol–gel auto-combustion mediated cobalt ferrite nanoparticles: a potential material for antimicrobial applications

Structural investigations and magnetic properties of sol-gel Ni0.5Zn0.5Fe2O4 thin films for microwave heating

Influence of pH Variation on Structural and Magnetic Properties of Ni-Zn Ferrite Nanoparticles Synthesized by Auto Combustion Method

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