Synthesis and characteristics of Fe3+-doped SnO2 nanoparticles via sol–gel-calcination or sol–gel-hydrothermal route

Fang, Limei; Zu, Xiaotao; Li, Z.J.; Zhu, Sha; Liu, C.M.; Zhou, Weilie; Wang, L.M.

doi:10.1016/j.jallcom.2006.12.014

Cited by 135 publications

(38 citation statements)

References 34 publications

(39 reference statements)

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“…1c) from 2.6 ± 0.1 nm at 0% Fe to 2.3 ± 0.1nm at 20%Fe, similar to previous studies of transition metal doped oxides. 19,20 Williamson-Hall analysis shows an increase in lattice strain with increasing Fe%, indicative of the structural changes that Fe doping introduces. Lattice parameter c and lattice volume V decreased rapidly for Fe doping <2.5% and moderately for Fe ≥2.5% ( Fig.…”

Section: Resultsmentioning

confidence: 99%

Size, surface structure, and doping effects on ferromagnetism in SnO2

Alanko

Thurber

Hanna

et al. 2012

Journal of Applied Physics

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The effects of crystallite size, surface structure, and dopants on the magnetic properties of semiconducting oxides are highly controversial. In this work, Fe:SnO 2 nanoparticles were prepared by four wet-chemical methods, with Fe concentration varying from 0-20%. Samples were characterized by x-ray diffraction (XRD), x-ray photoelectron spectroscopy (XPS), transmission electron microscopy (TEM), and vibrating sample magnetometry (VSM). Analysis confirmed pure single-phase cassiterite with a crystallite size of 2.6 ± 0.1 nm that decreased with increasing Fe%. Fe concentration was confirmed from XPS studies, with Fe ions in the 3+ oxidation state. Pure SnO 2 showed highly reproducible weak magnetization that varied significantly with synthesis method. Interestingly, doping SnO 2 with Fe<2.5% produced enhanced magnetic moments in all syntheses; the maximum of 1.6x10 -4 µ B /Fe ion at 0.1% Fe doping was much larger than the 2.6x10 -6 µ B /Fe ion of pure Fe oxide nanoparticles synthesized under similar conditions. At Fe≥2.5%, the magnetic moment was significantly reduced. This work shows that (i) pure SnO 2 can produce an intrinsic ferromagnetic behavior that varies with differences in surface structure, (ii) very low Fe doping results in high magnetic moments, (iii) higher Fe doping reduces magnetic moment and destroys ferromagnetism, and (iv) there is an interesting correlation between changes in magnetic moment, band gap, and lattice parameters. These results support the possibility that the observed ferromagnetism in SnO 2 might be influenced by modification of the electronic structure by dopant, size, and surface structure. Introduction:

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Section: Resultsmentioning

confidence: 99%

Size, surface structure, and doping effects on ferromagnetism in SnO2

Alanko

Thurber

Hanna

et al. 2012

Journal of Applied Physics

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“…15) SnO2 films showed a random orientation of growth regardless of the annealing temperature; only the crystallinity was enhanced with increased annealing temperature. 16) Additionally, when Ag nanorods/ nanowires were incorporated into the SnO2 films, similar diffraction patterns were observed, as shown in Fig.…”

Section: Jcs-japanmentioning

confidence: 96%

Study of the electrical enhancement of direct-patternable Ag-nanostructures embedded SnO2 thin films prepared by photochemical metal-organic deposition

Park

Zhang

Kim

et al. 2009

J. Ceram. Soc. Japan

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In this study, we characterized the optical and electric properties of direct-patternable SnO2 films with embedded Ag nanorods/nanowires prepared by photochemical metal-organic deposition using photosensitive precursors. SnO2 films showed a random orientation of growth independent on the presence of Ag nanorods/nanowires and annealing temperature. The values for sheet resistance and average transmittance of the SnO2 films with and without Ag nanorods/nanowires after annealing at 600°C were 6 kΩ/square and 82.2%, and 418 kΩ/square and 87.2%, respectively. Due to the incorporation of Ag nanorods/ nanowires into the SnO2 films, the sheet resistance was remarkably improved, but the optical transmittance was slightly decreased. These results and the direct-patternability of photochemical deposition suggest that SnO2 films with embedded Ag nanorods/nanowires could easily be used in transparent electrodes, eliminating the need for high cost processes such as dry etching.

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“…Figure 3 shows the FT-IR spectra for R1, R2 and R3 samples. The Sn-O-Sn vibration was emerged in the range of 400-700 cm -1 [42,43] and the peaks around 539 cm -1 were assigned to the antisymmetric Sn-O-Sn stretching mode, the absorption peak range of 1600-1700 cm -1 was attributed to vibration of hydroxyl group of SnO 2 and it may due to the adsorbed water [44]. The spectral changes can be effortlessly credited to changes in the size and shape of the SnO 2 particles and symmetric and asymmetric vibrations of the SnO 2 matching with the peak at 1356 cm -1 [45,46].…”

Section: Raman Spectramentioning

confidence: 99%

Facile synthesis of honeycomb structured SnO/SnO2 nanocomposites by microwave irradiation method

Kumar

Karuppuchamy

2015

J Mater Sci: Mater Electron

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SnO/SnO 2 nancomposites with honeycomb structure have been synthesized by microwave irradiation method. The prepared nanocomposites were characterized by X-ray diffraction (XRD), Raman spectra, Fourier transform infrared spectroscopy, scanning electron microscopy (SEM) and Photoluminescence spectroscopy techniques. It has been found that the size and morphology of the SnO/SnO 2 can be controlled by adjusting the microwave irradiation time. The XRD analysis revealed the formation of nanosized particles with tetragonal phase. The SEM images of the nanocomposites showed the honeycomb structured morphology. The SnO/SnO 2 ceramic nanocomposites also exhibit photoluminescence.

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Synthesis and characteristics of Fe3+-doped SnO2 nanoparticles via sol–gel-calcination or sol–gel-hydrothermal route

Cited by 135 publications

References 34 publications

Size, surface structure, and doping effects on ferromagnetism in SnO2

Size, surface structure, and doping effects on ferromagnetism in SnO2

Study of the electrical enhancement of direct-patternable Ag-nanostructures embedded SnO2 thin films prepared by photochemical metal-organic deposition

Facile synthesis of honeycomb structured SnO/SnO2 nanocomposites by microwave irradiation method

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