Synthesis and Magnetic Properties of Mn-Doped and SnO2 Nanoparticles

• Published in: Journal of superconductivity and novel magnetism Vol. 26; no. 6; pp. 2299 - 2302
• Main Authors: Cunha, T. R., Costa, I. M., Lima, R. J. S., Duque, J. G. S., Meneses, C. T.
• Format: Journal Article Conference Proceeding
• Language: English
• Published: Boston Springer US 01-06-2013; Springer
• Subjects: Characterization and Evaluation of Materials; Condensed Matter Physics; Condensed matter: electronic structure, electrical, magnetic, and optical properties; Cross-disciplinary physics: materials science; rheology; Diffraction; Domain effects, magnetization curves, and hysteresis; Exact sciences and technology; Magnetic Materials; Magnetic properties and materials; Magnetic semiconductors; Magnetism; Magnetization; Magnetization curves, magnetization reversal, hysteresis, barkhausen and related effects; Manganese; Materials science; Nanocrystalline materials; Nanoparticles; Nanopowders; Nanoscale materials and structures: fabrication and characterization; Original Paper; Physics; Physics and Astronomy; Strongly Correlated Systems; Studies of specific magnetic materials; Superconductivity; Synthesis; Tin dioxide; Tin oxides; Magnetic semiconductor; Rietveld refinement; Magnetic properties; Scanning electron microscopy; Rietveld method; Particle size; Magnetization; Impurity density; Tetragonal lattices; Manganese additions; XRD; Magnetic semiconductors; Nanoparticles; Tin oxide; Paramagnetic materials; Ferromagnetism; Coprecipitation
• ISSN: 1557-1939; 1557-1947
• DOI: 10.1007/s10948-012-1479-3

This paper reports the synthesis of Sn
1−
x
Mn
x
O
2
(for
x
=0, 0.01, 0.05 and 0.10) nanoparticles using the co-precipitation method. X-ray diffraction (XRD) results show that all samples are single phase with tetragonal crystalline structure. Rietveld refinements from XRD patterns show that the samples present particle average sizes of 4–30 nm confirmed by scanning electron microscopy. Magnetization results for SnO
2
nanoparticles at 5% and 10% of Mn synthesized at 800 °C exhibit a ferromagnetic behavior at room temperature and an increasing of the magnetization for increasing doping concentration. On the other hand, samples synthesized at 300 °C are paramagnetic.