Optical and magnetic properties of Sn 1− x Mn x O 2 dilute magnetic semiconductor nanoparticles

Ahmad, Tokeer; Khatoon, Sarvari; Coolahan, Kelsey

doi:10.1016/j.jallcom.2014.06.161

Cited by 22 publications

(7 citation statements)

References 44 publications

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“…A gradient trend of the all samples’ peaks, observed at figure , could be found that the position of the peaks was moved on diminishing. The intensity of the peaks decreases with mixing Ca(NO 3 ) 2 and Mg(NO 3 ) 2 , and such observation seems to suggest decrease in crystallinity, which was maybe caused by the formation of solid solution Therefore, the composited specimen, which was on figure (b‐h), exhibited weak peaks. However, it could be distinctly confirmed that it was that substance.…”

Section: Resultsmentioning

confidence: 96%

Electrospinning synthesis and photocatalytic property of CaFe₂O₄/MgFe₂O₄ heterostructure for degradation of tetracycline

Li¹,

Bai²,

Da³

et al. 2015

Crystal Research and Technology

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CaFe 2 O 4 /MgFe 2 O 4 nanowires with heterostructure had been successfully synthesized by electrospinning method. The obtained samples were systematically characterized by scanning electron microscopy (SEM), X-Ray diffraction (XRD), UV-Vis diffuse reflectance spectra (UV-Vis DR) and Environment scanning electron microscopy (ESEM). The novel CaFe 2 O 4 /MgFe 2 O 4 nanowires exhibit an enhanced photocatalytic activity for degrading of tetracycline (TC) under visible light. Compared with bare CaFe 2 O 4 or MgFe 2 O 4 samples, the prepared CaFe 2 O 4 /MgFe 2 O 4 (Ca:Mg:Fe = 3:2:10) composited nanowires show the best photocatalytic performance with a degradation efficiency of 40% after 150 min reaction time. This enhancement is attributed to the heterostructure of CaFe 2 O 4 /MgFe 2 O 4 nanowires, which effectively repress the recombination of photo-generated electrons and holes. Based on heterostructure and energy band positions, the enhancement of mechanism under visible-light enhances the photocatalytic activity.

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Section: Resultsmentioning

confidence: 96%

Electrospinning synthesis and photocatalytic property of CaFe₂O₄/MgFe₂O₄ heterostructure for degradation of tetracycline

Li¹,

Bai²,

Da³

et al. 2015

Crystal Research and Technology

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“…In addition, polymeric citrate precursor route is insensitive to the presence of moisture and it does not require any inert atmosphere as well as even without careful control of the gel processing time, a high degree of homogeneity may be obtained in nanoproducts. Recently, this method has been used for the successful synthesis of Mn‐ and Co‐doped SnO 2 nanoparticles with controlled morphology . In this paper, we present our investigation to understand the structural, optical, and magnetic properties of Ni‐doped SnO 2 nanoparticles synthesized by modified solvothermal method through oxalate precursor route.…”

Section: Introductionmentioning

confidence: 99%

Structural, Optical, and Magnetic Properties of Nickel‐Doped Tin Dioxide Nanoparticles Synthesized by Solvothermal Method

2016

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We have successfully synthesized Sn 1 -x Ni x O 2 (0.05 ≤ x ≤ 0.15) solid solutions in order to study their structural, optical, and magnetic properties at different Ni concentrations. X-ray diffraction showed monophasic and crystalline tetragonal structure. The shifting of peaks toward higher angle is attributed to the incorporation of Ni 2+ ions in SnO 2 host lattice. Particle growth restrained upon Ni-doping and found to be in the range of 8-12 nm. Ni-doped SnO 2 nanoparticles show blue shift in band gap studies, which is found to be in the range of 3.9-4.1 eV. High surface areas have been achieved for these solid solutions, which come out to be 130, 200, 457, 497, and 680 m 2 /g, respectively. The solid solutions exhibit paramagnetic behavior along with antiferromagnetic exchange coupling.R. Riman-contributing editor Manuscript No. 36898.

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“…Recently, this route was applied for the successful preparation of Mn-doped SnO 2 nanoparticles. 18 In this study, we present our investigation to understand the optical and magnetic properties of Co-doped SnO 2 nanoparticles prepared by modified solvothermal method through oxalate precursor route.…”

Section: Introductionmentioning

confidence: 99%

Structural characterization and properties of nanocrystalline Sn_1−xCo_xO₂ based dilute magnetic semiconductors

Ahmad

Khatoon

2015

J. Mater. Res.

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Monophasic Sn 1Àx Co x O 2 (x 5 0.05, 0.10, and 0.15) nanoparticles with tetragonal structure have been successfully synthesized by solvothermal method using oxalate precursor route. Powder x-ray diffraction and selected area electron diffraction studies confirmed highly crystalline cassiterite SnO 2 structure. The contraction of lattice constants confirmed the incorporation of Co 21 in SnO 2 host lattice. Hexagonal nanoparticles with average grain size of 8-13 nm have been formed. With the increasing Co content, the decreasing crystallite size of SnO 2 with increasing surface areas from 194 to 219 m 2 /g was found. The percentage reflectance increases on increasing the cobalt concentration, and a noticeable blue shift appeared. The band gap was found to be 3.85, 3.91, and 4.09 eV, respectively. Co-doped SnO 2 showed distinct magnetic behavior with different Co 21 concentration. For x 5 0.05 and 0.10, nanoparticles showed paramagnetism with antiferromagnetic interaction, however, on further increasing x 5 0.15, the nanoparticles showed canted antiferromagnetic coupling.

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Optical and magnetic properties of Sn 1− x Mn x O 2 dilute magnetic semiconductor nanoparticles

Cited by 22 publications

References 44 publications

Electrospinning synthesis and photocatalytic property of CaFe₂O₄/MgFe₂O₄ heterostructure for degradation of tetracycline

Electrospinning synthesis and photocatalytic property of CaFe₂O₄/MgFe₂O₄ heterostructure for degradation of tetracycline

Structural, Optical, and Magnetic Properties of Nickel‐Doped Tin Dioxide Nanoparticles Synthesized by Solvothermal Method

Structural characterization and properties of nanocrystalline Sn_1−xCo_xO₂ based dilute magnetic semiconductors

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Optical and magnetic properties of Sn 1− x Mn x O 2 dilute magnetic semiconductor nanoparticles

Cited by 22 publications

References 44 publications

Electrospinning synthesis and photocatalytic property of CaFe2O4/MgFe2O4 heterostructure for degradation of tetracycline

Electrospinning synthesis and photocatalytic property of CaFe2O4/MgFe2O4 heterostructure for degradation of tetracycline

Structural, Optical, and Magnetic Properties of Nickel‐Doped Tin Dioxide Nanoparticles Synthesized by Solvothermal Method

Structural characterization and properties of nanocrystalline Sn1−xCoxO2 based dilute magnetic semiconductors

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Electrospinning synthesis and photocatalytic property of CaFe₂O₄/MgFe₂O₄ heterostructure for degradation of tetracycline

Electrospinning synthesis and photocatalytic property of CaFe₂O₄/MgFe₂O₄ heterostructure for degradation of tetracycline

Structural characterization and properties of nanocrystalline Sn_1−xCo_xO₂ based dilute magnetic semiconductors