Semiconducting gas sensor for acetone based on the fine grained nickel ferrite

Rezlescu, N.; Iftimie, N.; Rezlescu, E.; Doroftei, C.; Popa, P.D.

doi:10.1016/j.snb.2005.05.030

Cited by 124 publications

(45 citation statements)

References 21 publications

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“…Polymetallic oxides, such as the perovskite-type LnMO 3 (Ln, lanthanoids, M, tri-valent cations) [1,2] and ferrite-type MFe 2 O 4 (M, di-valent cations) materials [3][4][5][6][7][8][9][10], have been investigated for many useful applications. The most conventional method for the preparation of these polymetallic oxides is the solid-state reaction of oxide materials.…”

Section: Introductionmentioning

confidence: 99%

Surface study of fine MgFe2O4 ferrite powder prepared by chemical methods

Aono

Hirazawa

Naohara

et al. 2008

Applied Surface Science

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Section: Introductionmentioning

confidence: 99%

Surface study of fine MgFe2O4 ferrite powder prepared by chemical methods

Aono

Hirazawa

Naohara

et al. 2008

Applied Surface Science

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“…[1][2][3][4][5][6] Spinel-type oxide semiconductors are an alternative for an inexpensive and robust detection system because of good chemical and thermal stability under operating conditions. [7][8][9][10] Currently, it is a topic of increasing interest to study the gas sensing properties of ferrites. [11][12][13][14][15][16] Ferrites show very good surface reactivity and they have temperaturedependent surface morphologies.…”

Section: Introductionmentioning

confidence: 99%

Nanostructured ZnFe₂O₄thick film as room temperature liquefied petroleum gas sensor

Srivastava

Yadav

2014

Journal of Experimental Nanoscience

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In the present work, thick film of nanostructured zinc ferrite was prepared by screen printing method and its liquefied petroleum gas (LPG) sensing properties were investigated. The structural and surface morphological characterisations of the sample were analysed by means of X-ray diffraction (XRD) and scanning electron microscopy (SEM). The minimum crystallite size of ZnFe 2 O 4 calculated from Scherrer's formula is found to be 4 nm. SEM images exhibit the porous nature of the sensing material with a number of active sites. Optical characterisation of the film was carried out by ultraviolet-visible spectrophotometer. The estimated value of band gap of the film was found 1.91 eV. The LPG sensing properties of the zinc ferrite film were investigated at room temperature for different vol.% of LPG. The variations in electrical resistance of the film were measured with the exposure of LPG as a function of time. The maximum values of sensitivity and percentage sensor response were found 16 and 1785, respectively, for 5 vol.% of LPG. These experimental results show that nanostructured zinc ferrite is a promising material for LPG sensor.

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“…Ferrites with nanoparticles have attracted considerable attention because of their distinctive magnetic and electrical properties [2] and applications such as gas sensors [3], computer memories [1,4,5], and microwaves devices [1,2,6]. The physical properties of magnetic nanoparticles composite differ from their corresponding bulk forms [2,4,7,8].…”

Section: Introductionmentioning

confidence: 99%

“…XRD measurements allowed us to identify the nanoparticle size for each annealing temperature and thus to correlate them to the dielectric permittivity. 3 .6H 2 O was dissolved in a suspension of coconut oil, prepared with a molar concentration clearly above the critical micelle concentration (CMC), that is 8.1 mmol/l. Then, the suspension is led at 75°C for 24 h, to eliminate the water excess.…”

Section: Introductionmentioning

confidence: 99%