Indian Journal of Pure and Applied Physics

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Paramagnetism in Nitrogen Implanted SnO2 by Low Energy Ion beam Irradiation


Affiliations
1 Department of Physics, Rajdhani College, University of Delhi, New Delhi 110 015, India
2 Department of Electronics and Communication, Netaji Subhas University of Technology, Delhi 110 076, India
3 Department of Mathematics, Rajdhani College, University of Delhi, New Delhi 110 015, India
4 CSIR-National Physical Laboratory, New Delhi 110 012, India

The electron paramagnetic resonance (EPR) spectrum of nitrogen implanted SnO2 thin films have been study. An isotropic g (gyromagnetic ratio) tensor is observed and calculated for all Samples (viz. as deposited and for different concentration of nitrogen in SnO2). The different g values are attributed to the different concentration of paramagnetic species. With the increase in doping of nitrogen from 2% to 6%, the substitution of oxygen vacancies and interstitial atom in electronic structure is alsoobserved. This is confirmed by absorption spectrum recorded by UV Visible.

Keywords

Electron paramagnetic resonance; Isotropic; SnO2
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  • Paramagnetism in Nitrogen Implanted SnO2 by Low Energy Ion beam Irradiation

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Authors

Nitin Kumar
Department of Physics, Rajdhani College, University of Delhi, New Delhi 110 015, India
Mahesh C Meena
Department of Physics, Rajdhani College, University of Delhi, New Delhi 110 015, India
Harshmani Yadav
Department of Electronics and Communication, Netaji Subhas University of Technology, Delhi 110 076, India
Umesh Kumar
Department of Mathematics, Rajdhani College, University of Delhi, New Delhi 110 015, India
Mukesh Jewariya
CSIR-National Physical Laboratory, New Delhi 110 012, India

Abstract


The electron paramagnetic resonance (EPR) spectrum of nitrogen implanted SnO2 thin films have been study. An isotropic g (gyromagnetic ratio) tensor is observed and calculated for all Samples (viz. as deposited and for different concentration of nitrogen in SnO2). The different g values are attributed to the different concentration of paramagnetic species. With the increase in doping of nitrogen from 2% to 6%, the substitution of oxygen vacancies and interstitial atom in electronic structure is alsoobserved. This is confirmed by absorption spectrum recorded by UV Visible.

Keywords


Electron paramagnetic resonance; Isotropic; SnO2