Investigation of Magnetic and Optical Properties of Mn-Doped SnO<sub>2</sub> at Different Annealing Temperatures

Authors

  • S. Negi Department of Physics, School of Basic and Applied Sciences, Maharaja Agrasen University, Solan, H.P, India
  • A. Sharma Department of Physics, School of Basic and Applied Sciences, Maharaja Agrasen University, Solan, H.P, India
  • P. Sharma Department of Physics, School of Basic and Applied Sciences, Maharaja Agrasen University, Solan, H.P, India

DOI:

https://doi.org/10.3329/jsr.v12i4.46052

Abstract

In this paper, a systematic investigation has been done to study the effect of variation in annealing temperature on magnetic and optical properties of Mn-doped SnO2. Co-precipitation technique has been used to synthesize Sn1-xMnxO2 samples with low Mn concentration (2 %). Pristine SnO2 is sintered at 350 oC. Mn-doped SnO2 samples are sintered at 350, 450, 550 and 650 oC. The structures of tetragonal rutile of SnO2 and Mn-doped SnO2 have been confirmed by the XRD pattern. Typical ferromagnetic ordering has been observed for Mn-doped SnO2 samples annealed at different temperatures. However, on increasing the annealing temperature saturation magnetization as well as the coercive field decreases, indicating a crucial phase transformation from ferromagnetism to paramagnetism. UV-Vis spectroscopy shows increase in absorbance and a slight shift in the absorption edge with Mn-doping at increasing annealing temperature indicating shifting of absorption peak towards higher wavelength. Tauc’s plot has been used to find the optical band gap (Eg).

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Published

2020-09-01

How to Cite

Negi, S., Sharma, A., & Sharma, P. (2020). Investigation of Magnetic and Optical Properties of Mn-Doped SnO<sub>2</sub> at Different Annealing Temperatures. Journal of Scientific Research, 12(4), 555–567. https://doi.org/10.3329/jsr.v12i4.46052

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Section

Section A: Physical and Mathematical Sciences