Skip to main content Accessibility help
×
Home

Magnetic and optical properties of Mn-doped SnO2 films

  • S.Sujatha Lekshmy (a1), V.S Anitha (a1) and K. Joy (a1)

Abstract

Magnetic nanoparticles have drawn much attention due to their potential in magnetic recording as well as many biological and medical applications such as magnetic separation, hyperthermia treatment, magnetic resonance contrast enhancement and drug delivery. The magnetic fields generated by these nanoparticles can be used for diagnostics in Magnetic Resonance Imaging (MRI) etc. Manganese doped tin dioxide (SnO2:Mn) possess interesting physical and chemical properties. The physical and chemical properties of the particles themselves like the size, shape, crystallinity and composition, will control the magnetic properties and response of the particles to magnetic fields. Our work is rooted to control the properties of the particles as well as tailor their magnetic properties for specific applications. In this study, SnO2: Mn films with different Mn doping concentrations (0-3 mol%) were deposited on the glass substrates by sol-gel dip coating technique. XRD patterns shows tetragonal structure for all the SnO2:Mn films and crystallite size decreased as Mn doping concentration increased from 0 - 3 mol%. The magnetic property shows that pure SnO2 film is diamagnetic and 1- 3 mol% SnO2:Mn films posses room temperature ferromagnetism. The optical properties of the films revealed that transmittance of the films decreased with increase in Mn doping concentration. The optical energy band gap values (3.55 eV-3.71 eV) increased with the increase in Mn doping concentrations. Such SnO2:Mn films with structural, optical and magnetic properties can be used as dilute magnetic semiconductors.

Copyright

Corresponding author

*Corresponding author e-mail: jolly2jolly@gmail.com

References

Hide All
[1] Wolf, S. A., Awschalom, D. D., Buhrman, R. A., Daughton, J. M., Von Molnar, S., Roukes, M. L., Chtchelkanova, A. Y., and Treger, D. M., Science 294(5546) 14881495 (2001).
[2] Erwin, S.C., Zu, L., Haftel, M.I., Efros, A.L., Kennedy, T.A., Norris, D.J., Nature 436(03832) 9195 (2005).
[3] Norris, D.J., Efros, A.L., Erwin, S.C., Science 319(5871) 17761779 (2008).
[4] Gu, Feng, Fen Wang, Shu, Kai Lu, Meng, Jun Zhou, Guang, Xu, Dong and Yuan, Duo Rong J. Phys. Chem. B, 108(35) 81198123(2004). .
[5] Sujatha Lekshmy, S., Daniel, Georgi P., Joy, K., “Microstructure and physical properties of sol gel derived SnO2: Sb thin films for optoelectronic applicationsApplied Surface Science 274, 95100 (2013).
[6] Swanepoel, R J Phys E: Sci Instrum 16:1214 (1983).
[7] Bagheri-Mohagheri, M. M. and Shokooh-Saremi, M. Semicond. Sci. Tecnol. 19 [6] 764769 (2004).
[8] Cullity, BD, Stock, SR, 3rd edn. Prentice Hall, Upper Saddle River, p 388 (2001).
[9] Sundaresan, A, Bhargavi, R, Rangarajan, N, Siddesh, U, Rao, CNR Phys Rev B 74:161306 (2006)
[10] Coey, J. M. D., Douvalis, A. P., Fitzgerald, C. B., and Venkatesan, M. Appl. Phys. Lett. 84(8) 13321343(2004).
[11] Kimura, H., Fukumura, T., Kawasaki, M., Inaba, K., Hasegawa, T., and Koinuma, H. Appl. Phys. Lett. 80(1) 9497 (2002)
[12] Ghodsi, F.E., Mazloom, J, Appl Phys A 108 693700(2012).
[13] Wood, DL, Tauc J Phys Rev B 5:31443151(1972).
[14] Valle, GG, Hammer, P, Pulcinelli, SH, Santilli, CV J. Eur. Ceram. Soc 24:10091013 (2004).

Keywords

Magnetic and optical properties of Mn-doped SnO2 films

  • S.Sujatha Lekshmy (a1), V.S Anitha (a1) and K. Joy (a1)

Metrics

Full text views

Total number of HTML views: 0
Total number of PDF views: 0 *
Loading metrics...

Abstract views

Total abstract views: 0 *
Loading metrics...

* Views captured on Cambridge Core between <date>. This data will be updated every 24 hours.

Usage data cannot currently be displayed