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A. SHARMA1,* , S. KUMAR2, R. KUMAR3, M. VARSHNEY1, K. D. VERMA1
Nanosized tin oxide (SnO2) powders of different sizes were synthesized using co-precipitation method without using any surfactant or capping agent. The crystal structure, morphology, optical band gap and magnetic behavior of so formed SnO2 nanoparticles were investigated by using, x-ray diffraction (XRD), transmission electron microscopy (TEM), UV-visible absorption, and magnetic hysteresis loop measurements. Room temperature ferromagnetism with a significant blue shift in absorption edge was observed in 3pH grown sample. The controlled colloidal synthesis, with pH variation, and post annealing process grown larger sized nanoparticles have shown size dependent magnetic characteristics and sufficient redshift in the absorption edge. The grain growth processes during colloidal synthesis and post annealing are also briefed. Keywords: SnO2, nanoparticles, ferromagnetism, diamagnetism, x-ray diffraction.
Nanoparticles, XRD, TEM, ferromagnetism and grain growth.
A. SHARMA, S. KUMAR, R. KUMAR, M. VARSHNEY, K. D. VERMA, Size dependent structural, optical and magnetic properties of un-doped SnO2 nanoparticles, Optoelectronics and Advanced Materials - Rapid Communications, 3, 12, December 2009, pp.1285-1289 (2009).
Submitted at: Nov. 1, 2009
Accepted at: Nov. 23, 2009
Optoelectronics and Advanced Materials - Rapid Communications
(2023): 0.5 - 2023 Journal Citation Reports (Clarivate Analytics, 2024)
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