Room temperature ferromagnetism of tin oxide nanocrystal based on synthesis methods

Sakthiraj, K.; Hema, M.; Balachandrakumar, K.

doi:10.1016/j.physb.2016.01.026

Cited by 7 publications

(5 citation statements)

References 45 publications

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“…Magnetic properties may, in a somewhat similar manner, appear and become measurable in SnO 2 based oxide films. The room temperature ferromagnetism has been detected in SnO 2 -based nanostructures not mixed with foreign cations, as reported in several papers [41][42][43][44].…”

Section: Magnetic Propertiessupporting

confidence: 71%

Mechanical and Magnetic Properties of Double Layered Nanostructures of Tin and Zirconium Oxides Grown by Atomic Layer Deposition

et al. 2021

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Double layered stacks of ZrO2 and SnO2 films, aiming at the synthesis of thin magnetic and elastic material layers, were grown by atomic layer deposition to thicknesses in the range of 20–25 nm at 300 °C from ZrCl4, SnI4, H2O, and O3 as precursors. The as-deposited nanostructures consisted of a metastable tetragonal polymorph of ZrO2, and a stable tetragonal phase of SnO2, with complementary minor reflections from the orthorhombic polymorph of SnO2. The hardness and elastic modulus of the stacks depended on the order of the constituent oxide films, reaching 15 and 171 GPa, respectively, in the case of top SnO2 layers. Nonlinear saturative magnetization could be induced in the stacks with coercive fields up to 130 Oe.

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Section: Magnetic Propertiessupporting

confidence: 71%

Mechanical and Magnetic Properties of Double Layered Nanostructures of Tin and Zirconium Oxides Grown by Atomic Layer Deposition

et al. 2021

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“…nanoparticles and using the extrapolation line at the linear region the band gap values are determined as 3.5 eV and 3.6 eV for SnO 2 and Zn:SnO 2 respectively [19]. There is an increase in the band gap value which can be explained by the Burstein-Moss broadening effect caused by the addition of Zn dopant ions in the SnO 2 lattice [20,43] which introduces new degenerate energy levels and uplifts the Fermi level to conduction band edge thereby considerably increasing the overall bandgap [23,25].…”

Section: Optical Studiesmentioning

confidence: 95%

“…The synthesized nanoparticles crystallite size (D) and dislocation density (δ) are calculated using the following Eq. where, K is a constant (0.9), λ is the Cu-Kα (1.5418 Å) X-ray wavelength, θ is the diffracted angle in radians and β is the FWHM intensity in radians [23,35]. The average crystallite size (D) was calculated using the Debye-Scherrer Eq.…”

Section: Structural Analysismentioning

confidence: 99%

“…The blue emission peak is caused due to the electron-hole recombination at the oxygen vacancies and the weak red emission peak is due to the radiative emission of oxygen vacancy related point defects. Due to the doping of Zn ions in the SnO 2 lattice there arises new electron-hole pairs and oxygen vacancy sites mainly to maintain charge neutrality of the crystal [20,23,36]. The red emission peaks in the Zn:SnO 2 is due to the recombination of electrons which are trapped at the oxygen vacancy with the dopant related deep level surface defects [44,45].…”

Section: Photoluminescence (Pl) Studiesmentioning

confidence: 99%

“…When SnO 2 was doped with any of these dopants its properties like optical, structural, chemical compositional, magnetic behaviour, photovoltaic properties, gas sensing abilities, electrical properties, electrochemical properties, etc., were changed to a large extent due to the presence of large oxygen deficiency . Among these dopants, Zn is a d-group element in the periodic table that shows enhanced crystalline, optical, electrical and magnetic properties upon doping [23].…”

Section: Introductionmentioning

confidence: 99%

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Photocatalytic Activity of Pure and Zinc Doped Tin Oxide Nanoparticles Synthesized by One Step Direct Injection Flame Synthesis

Prabhu

Kathirvel

Maruthamani

et al. 2021

J Inorg Organomet Polym

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A very simple and rapid Direct Injection Flame Synthesis (DIFS) method is effectively used to synthesize pure tin oxide (SnO 2 ) and zinc doped tin oxide (Zn:SnO 2 ) nanoparticles from the metallic tin (Sn) and zinc (Zn) powders for the photocatalytic degradation of methylene blue (MB) dye. The DIFS nanoparticles were characterized using XRD, Raman, UV-Vis, FESEM, PL and EDX studies. The X-ray diffraction analysis indicated that the synthesized SnO 2 and Zn:SnO 2 nanoparticles have pure tetragonal phases and their average crystallite size decreases when Zn was doped with SnO 2 . Raman study confirmed the various mode of vibrations and the crystal structure of the synthesized nanoparticles. Purity, atomic percentage and chemical composition were analysed using Energy dispersive X-ray analysis and found to be free from impurities. The band gap energy increases from 3.5 to 3.6 eV upon doping which was revealed from the UV-Visible spectroscopic analysis. Photoluminescence analysis confirms the red shifted emission for Zn:SnO 2 due to the oxygen deficiency. The CIE chromaticity (x,y) for SnO 2 and Zn:SnO 2 was calculated from the emission spectra and the co-ordinates represents blue and violet region respectively. Field Emission Scanning Electron Microscopy analysis showed that the pure SnO 2 nanoparticles have irregular, agglomerated, nanoflowered and nanoclustered formation whereas Zn:SnO 2 nanoparticles has more crystalline, cubical and nanoflake structure. The photocatalytic activity was enhanced due to the presence of Zn in SnO 2 under UV light irradiation. The efficiency of MB degradation by SnO 2 was found to be 82% and enhanced to 88% upon doping. Thus the Zn doped SnO 2 nanoparticles synthesized by DIFS was found to be an effective photocatalyst than the pure SnO 2 . KeywordsTin oxide • Zinc doped tin oxide • Flame synthesis (DIFS) • Methylene Blue • Photocatalyst * P. Kathirvel

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Bifunctional properties of manganese-doped tin oxide nanostructures for visible light–driven photocatalytic activity and antibacterial applications

Asaithambi,

Rajkumar,

Iyer

et al. 2024

Ionics

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Room temperature ferromagnetism of tin oxide nanocrystal based on synthesis methods

Cited by 7 publications

References 45 publications

Mechanical and Magnetic Properties of Double Layered Nanostructures of Tin and Zirconium Oxides Grown by Atomic Layer Deposition

Mechanical and Magnetic Properties of Double Layered Nanostructures of Tin and Zirconium Oxides Grown by Atomic Layer Deposition

Photocatalytic Activity of Pure and Zinc Doped Tin Oxide Nanoparticles Synthesized by One Step Direct Injection Flame Synthesis

Bifunctional properties of manganese-doped tin oxide nanostructures for visible light–driven photocatalytic activity and antibacterial applications

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