Skip to main content Accessibility help
×
Home

Magnetic, structural, electronic, and optical investigations of Ti1−xMnxO2 films

  • Sudesh Sharma (a1), Sujeet Chaudhary (a2) and Subhash Chand Kashyap (a2)

Abstract

Observation of room temperature ferromagnetism (RTFM) is reported in polycrystalline thin films of Ti1−xMnxO2 (x = 0.10 and 0.15) synthesized by spray pyrolysis technique on fused quartz substrates. Our experimental results clearly suggest partial incorporation of manganese (Mn) in titanium dioxide (TiO2) lattice up to certain extent and rest of the Mn ions are consumed to form secondary Mn-related phase such as manganese oxide (Mn3O4). The observed weak ferromagnetic ordering at room temperature in the films is established to be due to incorporation of Mn in TiO2matrix rather than the presence of other secondary phases since none of the Mn or Ti/Mn oxide phase is ferromagnetic at room temperature. Bound magnetic polaron model is invoked to explain the observed ferromagnetism in these highly resistive films.

Copyright

Corresponding author

a)Address all correspondence to this author. e-mail: sujeetc@physics.iitd.ac.in

References

Hide All
1.Ohno, H., Shen, A., Matsukura, F., Oiwa, A., Endo, A., Katsumoto, S., and Iye, Y.: (Ga, Mn)As: A new diluted magnetic semiconductor based on GaAs. Appl. Phys. Lett. 69, 363 (1996).
2.Prinz, G.A.: Magnetoelectronics. Science 282, 1660 (1998).
3.Ohno, H.: Making nonmagnetic semiconductor ferromagnetic. Science 281, 951 (1998).
4.Wolf, S.A., Awschalom, D.D., Buhrman, R.A., Daughton, J.M., Molnar, S.V., Roukes, M.L., Chtchelkanova, A.Y., and Treger, D.M.: Spintronic: A spin-based electronics vision for the future. Science 294, 1488 (2001).
5.Dietl, T., Ohno, H., Matsukur, F., Cibert, J., and Ferrad, D.: Zener model description of ferromagnetism in zinc-blende magnetic semiconductors. Science 287, 1019 (2000).
6.Matsumoto, Y., Murakami, M., Shono, T., Hasegawa, T., Fukumura, T., Kawasaki, M., Ahmet, P., Chikyow, T., Koshihara, S., and Koinuma, H.: Room-temperature ferromagnetism in transparent transition metal-doped titanium dioxide. Science 291, 854 (2001).
7.Bhattacharyya, S., Pucci, A., Zitoun, D., and Gedanken, A: One-pot fabrication and magnetic studies of Mn-doped TiO2 nanocrystals with an encapsulating carbon layer. Nanotechnology 19, 495711 (2008).
8.Tian, Z.M., Yuan, S.L, He, J.H, Wang, Y.Q., Li, P., Xie, H.Y., Liu, L., and Yin, S.Y.: Effects of sintering temperature and atmosphere on magnetism in Mn-doped TiO2 bulk samples. Solid-state Commun. 142, 545 (2007).
9.Pinto, J.V., Cruz, M.M., da Silva, R.C., Alves, E., and Godinhoa, M.: Magnetic properties of TiO2 rutile implanted with Ni and Co. J. Magn. Magn. Mater. 294, e73 (2005).
10.Kim, J-Y., Park, J-H., Park, B-G., Noh, H-J., Oh, S-J., Yang, J.S., Kim, D-H., Bu, S.D., Noh, T-W., Lin, H-J., Hsieh, H-H., and Chen, C.T.: Ferromagnetism induced by clustered Co in Co-doped TiO2 thin films. Phys. Rev. Lett. 90, 017401 (2003).
11.Griffin, K.A., Pakhomov, A.B., Wang, C.M., Heald, S.M., and Krishnan, K.M.: Intrinsic ferromagnetism insulating cobalt-doped anatase TiO2. Phys. Rev. Lett. 94, 157204 (2005).
12.Cho, J.H., Hwang, T.J., Joh, Y.G., Kim, E.C., Kim, D.H., Lee, K.J., Park, H.W., Ri, H-C., Kim, J.P., and Cho, C.R.: Room-temperature ferromagnetism in highly resistive Ni-doped TiO2. Appl. Phys. Lett. 88, 092505 (2006).
13.Li, X., Wu, S., Hu, P., Xing, X., Liu, Y., Yu, Y., Yang, M., Lu, J., Li, S., and Liu, W.: Structures and magnetic properties of p-type Mn:TiO2 dilute magnetic semiconductor thin films. J. Appl. Phys. 106, 043913 (2009).
14.Janish, R., Gopal, P., and Spaldin, N.A.: Transition metal-doped TiO2 and ZnO-present status of the field. J. Phys. Condens. Matter 17, R657 (2005).
15.Kaspar, T.C., Heald, S.M., Wang, C.M., Bryan, J.D., Droubay, T., Shutthanandan, V., Thevuthasan, S., McCready, D.E., Kellock, A.J., Gamelin, D.R., and Chambers, S.A.: Negligible magnetism in excellent structural quality CrxTi1-xO2 anatase: Contrast with high T C ferromagnetism in structurally defective CrxTi1-xO2. Phys. Rev. Lett. 95, 217203 (2005).
16.Kim, K.J., Park, Y.R., Lee, J.H., Choia, S-L., Lee, H.J., Kim, C.S., and Park, J.Y.: Room temperature ferromagnetic properties in Mn-doped rutile TiO2 thin films. J. Magn. Magn. Mater. 316, e215 (2007).
17.Hong, N.H., Sakai, J., Ruyter, A., and Brize, V.: Does Mn-doping play any key role in tailoring the ferromagnetic ordering of TiO2 thin films? Appl. Phys. Lett. 89, 252504 (2006).
18.Coey, J.M.D., Venkateshan, M., and Fitzgerald, C.B.: Donor impurity band exchange in dilute ferromagnetic oxides. Nat. Mater. 4, 173 (2005).
19.Lide, D.R.: CRC Handbook of Chemistry and Physics, 87th ed. (Taylor and Francis, London, 2005).
20.Sharma, S., Chaudhary, S., Kashyap, S.C., and Sharma, S.K.: Room temperature ferromagnetism in Mn-doped TiO2 thin films: Electronic structure and Raman investigations. J. Appl. Phys. 109, 083905 (2011).
21.Wang, Z., Tang, J., Chen, Y., Spinu, L., Zhou, W., and Tung, L.D.: Room-temperature ferromagnetism in Mn-doped reduced rutile titanium dioxide thin films. J. Appl. Phys. 95, 7384 (2004).
22.Ding, P., Liu, F.M., Yang, X.A., and Li, J.Q.: Preparation, structure and ferromagnetic properties of the nanocrystalline Ti1-xMnxO2 thin films grown by redio frequency magnetron co-sputtering. Chinese Phsyics B 17, 721 (2008).
23.Tian, Z.M., Yuan, S.L., Wang, Y.Q., He, J.H., Yin, S.Y., Liu, K.L., Yuan, S.J., and Liu, L.: Magnetic studies on Mn-doped TiO2 bulk samples, J. Phys. D: Appl. Phys. 41, 055006 (2008).
24.Sellers, M.C.K. and Seebauer, E.G.: Structural and magnetic properties of Mn-doped anatase TiO2 films synthesized by atomic layer deposition. Appl. Phys. A 104, 583 (2011).
25.Ogale, S.B.: Thin Film and Heterostructures for Oxide Electronics, (Springer Science+Business Media, Inc., New York, NY, 2005), p. 245.
26.Kaminski, A. and Sarma, S.D.: Polaron percolation in dilute magnetic semiconductors, Phys. Rev. Lett. 88, 247202 (2002).

Keywords

Related content

Powered by UNSILO

Magnetic, structural, electronic, and optical investigations of Ti1−xMnxO2 films

  • Sudesh Sharma (a1), Sujeet Chaudhary (a2) and Subhash Chand Kashyap (a2)

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.