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Defect driven enhanced ferromagnetism in Sb-modified SnO2 nanoparticles.

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Title: Defect driven enhanced ferromagnetism in Sb-modified SnO2 nanoparticles.
Authors: Mallick, H. K.1 (AUTHOR), Santara, Batakrushna2 (AUTHOR), Sahoo, M. P. K.1 (AUTHOR) mpksiit@gmail.com, Pattanaik, A. K.1 (AUTHOR) akpattanaik_phy@vssut.ac.in
Source: Journal of Materials Science: Materials in Electronics. Jan2023, Vol. 34 Issue 2, p1-14. 14p.
Subjects: Ferromagnetism, Transmission electron microscopy, Lattice constants, Nanoparticles, Scanning electron microscopy
Abstract: This work reports the tailoring of optical and magnetic properties in Sb-doped SnO2 nanoparticles (NPs), i.e., Sn1-xSbxO2(x = 0.0, 0.03, 0.06, 0.09) synthesized by gel-combustion technique. The structural properties of these nanoparticles are investigated by the X-ray diffraction (XRD) technique. Detailed structural analysis shows the crystallization of all these NPs in tetragonal rutile structure, as observed in pristine SnO2 without any trace of the secondary phase. Nevertheless, the incorporation of Sb dopant was found to increase the lattice constant systematically. Investigation of surface morphology by scanning electron microscopy and particle size by transmission electron microscopy also indicates a systematic increase in the grain size and particle size with Sb doping. Intriguingly, bandgap and room-temperature ferromagnetism (RTFM) are found to be sensitive to particle size and oxygen vacancies. UV–visible absorption, Fourier transform infrared, photoluminescence, and X-ray photoelectron spectroscopic measurements are carried out to explore the underlying physical mechanisms. Besides, the increase in RTFM and decrease in the bandgap witnessed in Sb-doped SnO2 NPs can be exploited for magneto-optic and spintronic devices. [ABSTRACT FROM AUTHOR]
Copyright of Journal of Materials Science: Materials in Electronics is the property of Springer Nature and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
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  Data: Defect driven enhanced ferromagnetism in Sb-modified SnO<subscript>2</subscript> nanoparticles.
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  Data: <searchLink fieldCode="JN" term="%22Journal+of+Materials+Science%3A+Materials+in+Electronics%22">Journal of Materials Science: Materials in Electronics</searchLink>. Jan2023, Vol. 34 Issue 2, p1-14. 14p.
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  Data: <searchLink fieldCode="DE" term="%22Ferromagnetism%22">Ferromagnetism</searchLink><br /><searchLink fieldCode="DE" term="%22Transmission+electron+microscopy%22">Transmission electron microscopy</searchLink><br /><searchLink fieldCode="DE" term="%22Lattice+constants%22">Lattice constants</searchLink><br /><searchLink fieldCode="DE" term="%22Nanoparticles%22">Nanoparticles</searchLink><br /><searchLink fieldCode="DE" term="%22Scanning+electron+microscopy%22">Scanning electron microscopy</searchLink>
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  Data: This work reports the tailoring of optical and magnetic properties in Sb-doped SnO2 nanoparticles (NPs), i.e., Sn1-xSbxO2(x = 0.0, 0.03, 0.06, 0.09) synthesized by gel-combustion technique. The structural properties of these nanoparticles are investigated by the X-ray diffraction (XRD) technique. Detailed structural analysis shows the crystallization of all these NPs in tetragonal rutile structure, as observed in pristine SnO2 without any trace of the secondary phase. Nevertheless, the incorporation of Sb dopant was found to increase the lattice constant systematically. Investigation of surface morphology by scanning electron microscopy and particle size by transmission electron microscopy also indicates a systematic increase in the grain size and particle size with Sb doping. Intriguingly, bandgap and room-temperature ferromagnetism (RTFM) are found to be sensitive to particle size and oxygen vacancies. UV–visible absorption, Fourier transform infrared, photoluminescence, and X-ray photoelectron spectroscopic measurements are carried out to explore the underlying physical mechanisms. Besides, the increase in RTFM and decrease in the bandgap witnessed in Sb-doped SnO2 NPs can be exploited for magneto-optic and spintronic devices. [ABSTRACT FROM AUTHOR]
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  Label:
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  Data: <i>Copyright of Journal of Materials Science: Materials in Electronics is the property of Springer Nature and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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        Value: 10.1007/s10854-022-09437-6
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      – SubjectFull: Lattice constants
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      – SubjectFull: Nanoparticles
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              Text: Jan2023
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