Preparation and characterization of tin-doped spinel ferrite

Pegoretti, V.C.B.; Couceiro, Paulo Rogério da Costa; Gonçalves, C.M.; Lélis, Maria de Fátima Fontes; Fabris, José Domingos

doi:10.1016/j.jallcom.2010.06.058

Cited by 20 publications

(10 citation statements)

References 26 publications

(25 reference statements)

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“…Due to the fact that these materials display numerous unusual proprieties, that further tuned by suitably varying their chemical composition, defectivity and structure (Refs. [28][29][30][31][32] and are characterised by the presence of iron in a high oxidation state (III, or the rather rare IV) (Refs. Additionally, through the nanosizing of these oxides, innovative behaviours, such as the transition from ionic-electronic conductor to semiconductor, have already been highlighted (Refs.…”

Section: Introductionmentioning

confidence: 99%

Coprecipitated Transition Metal Ferrites Investigated by XPS

Diodati

Gross

2013

Surface Science Spectra

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Synthesis and characterization of nickel ferrite magnetic nanoparticles by co-precipitation method AIP Conf. Proc. 1502, 221 (2012); 10.1063/1.4769146Study of reversible and irreversible magnetization processes of coprecipitated cobalt ferrite Summary Abstract: Investigation of the metalsupport interaction in coprecipitated nickel on alumina methanation catalysts using xray photoelectron spectroscopyIn the present contribution, four transition metal ferrites, namely the manganese perovskite MnFeO 3 and the nickel, cobalt and zinc spinels NiFe 2 O 4 , CoFe 2 O 4 , and ZnFe 2 O 4 , were investigated through XPS (X-ray Photoelectron Spectroscopy). The synthesis route for the analyzed materials involved the precipitation of metal oxalates from an aqueous solution of metallic salts and oxalic acid. The precipitate was then isolated and calcined at 900 C in order to obtain the crystalline ferrite powders. Along with survey scans of the analyzed samples, detailed spectra of the O 1s, C 1s, Fe 2p and M 2p (where M = Mn, Ni, Co, Zn depending on the compound in question) regions were collected. The data resulting from these analyses is discussed.

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Section: Introductionmentioning

confidence: 99%

Coprecipitated Transition Metal Ferrites Investigated by XPS

Diodati

Gross

2013

Surface Science Spectra

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“…Tin ferrite is an important candidate of the spinel family because of its technological importance [6,7]. Nanostructured spinel ferrites have been synthesized using different techniques such as sol-gel [8], co-precipitation [7], ball milling [9], combustion [10], solothermal polyol [11]. The influence of surface effect on the magnetic properties such as enhanced magnetization or superparmagnetism is observed in these nanostructured spinel ferrites [11].…”

Section: Introductionmentioning

confidence: 99%

Epitaxial growth of tin ferrite thin films using pulsed laser deposition technique

Gupta

Yakuphanoğlu

2011

Journal of Alloys and Compounds

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“…It was reported that the valence state of Sn in the Fe 3−x Sn x O 4 was + 4 89101112, and the redox reactions between gaseous SnO and FeOx were discussed in this section.…”

Section: Resultsmentioning

confidence: 92%

“…For instance, tin-doped spinel (Fe 3−x Sn x O 4 , x = 0~1.0) has been widely used as ferrimagnetic materials, electrical transformer cores, gas-detector sensors, heterogeneous catalysts and magnetic memory devices89101112. Previous synthetic methods for Sn-doped spinel were solid-state reactions, which required the synthesis temperature above 1300 °C and reaction time more than 10 hours101112. However, excessively high temperature accelerated the formation of liquid phase, which resulted in a large grain size of the products.…”

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confidence: 99%

“…However, excessively high temperature accelerated the formation of liquid phase, which resulted in a large grain size of the products. In order to obtain Fe-Sn spinel nanoparticles with regular shape and unique physical-chemical property, co-precipitation and precipitation exchange methods are commonly applied in the laboratory researches10111213. Aqueous solutions of iron (III) and tin (II) chlorines or nitrates were first prepared and mixed as a stoichiometric ratio, followed by adding NH 3 ·H 2 O or NaOH solutions into the mixed solution to adjust the pH value.…”

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Formation mechanisms of Fe3−xSnxO4 by a chemical vapor transport (CVT) process

Zhang

Liu

et al. 2017

Sci Rep

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Our former study reported that Fe-Sn spinel (Fe3−xSnxO4) was easily formed when SnO2 and Fe3O4 were roasted under CO-CO2 atmosphere at 900–1100 °C. However, the formation procedure is still unclear and there is a lack of theoretical research on the formation mechanism of the Fe-Sn spinel. In this work, the reaction mechanisms between SnO2 and Fe3O4 under CO-CO2 atmosphere were determined using XRD, VSM, SEM-EDS, XPS, etc. The results indicated that the formation of Fe3−xSnxO4 could be divided into four steps: reduction of SnO2 to solid phase SnO, volatilization of gaseous SnO, adsorption of gaseous SnO on the surface of Fe3O4, and redox reaction between SnO and Fe3O4. During the roasting process, part of Fe3+ in Fe3O4 was reduced to Fe2+ by gaseous SnO, and meanwhile Sn2+ was oxidized to Sn4+ and entered into Fe3−xSnxO4. The reaction between SnO2 and Fe3O4 could be summarized as Fe3O4 + xSnO(g) → Fe3−xSnxO4 (x = 0–1.0).

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Preparation and characterization of tin-doped spinel ferrite

Cited by 20 publications

References 26 publications

Coprecipitated Transition Metal Ferrites Investigated by XPS

Coprecipitated Transition Metal Ferrites Investigated by XPS

Epitaxial growth of tin ferrite thin films using pulsed laser deposition technique

Formation mechanisms of Fe3−xSnxO4 by a chemical vapor transport (CVT) process

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