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Magnetic and Electronic Properties of n-type (Al,Ga) co-doped Zn(Cu)O based Dilute Magnetic Semiconductors

  • Deepayan Chakraborti (a1), John T. Prater (a2) and Jagdish Narayan (a3)

Abstract

Systematic studies on the epitaxial growth and the effect of n-type (Al,Ga) doping on the magnetic and electrical properties of 2.0 % Cu doped ZnO dilute magnetic semiconducting thin films deposited on c-plane sapphire single crystals by pulsed laser deposition are reported here. An decrease in more than 3 orders of magnitude in resistivity from 2×101 Ohm cm for the 2.0 % Cu doped ZnO to ~5×10-3 Ohm cm for Al and Ga codoped films is observed. This increase in conductivity does not show any effect on ferromagnetic ordering thus contradicting the claim of free carrier mediated exchange as being responsible for ferromagnetic ordering in these DMS systems. A bound magnetic polaron or F-center mediated exchange is a possible explanation for the origin of ferromagnetism in these ZnO based DMS thin films.

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1. Dietl, T., Ohno, H., Matsukura, F., Cibert, J., and Ferrand, D., Science 287, 1019 (2000)
2. Ueda, K., Tabata, H., and Kawai, T., Appli. Phys. Lett. 79, 988 (2001)
3. Özgür, Ü., Alivov, Ya. I., Liu, C., Teke, A., Reshchikov, M. A., Dogan, S., Avrutin, V., Cho, S.-J., and Morkoç, H., J. Appl. Phys. 98, 041301 (2005)
4. Pearton, S.J., Heo, W.H., Ivill, M., Norton, D.P., and Steiner, T., Semicond. Sci. Technol. 19, R59 (2004)
5. Sato, K. and Katayama-Yoshida, H., Jpn J. Appl. Phys., Part 2 39, L555 (2000)
6. Chakraborti, D., Narayan, J., and Prater, J.T., Appl. Phys. Lett. 90, 062504 (2007)
7. Mondragón-Suárez, H., Maldonado, A., Olvera, M. de la L., Reyes, A., CastanedoPérez, R., Torres-Delgado, G., and Asomoza, R., Applied Surface Science 193, 52 (2002)
8. Bhosle, V., Tiwari, A., and Narayan, J., J. Appl. Phys. 100, 033713 (2006)
9. Lee, H.-J., Jeong, S.-Y., Cho, C.R., and Park, C.H., Appl Phys. Lett. 81, 4020 (2002)
10. Coey, J.M.D, Douvalis, A.P, Fitzgerald, C.B and Venkatesan, M., Appl. Phys. Lett, 84, 1332(2004)
11. Chambers, S.A., Droubay, T., Wang, C.M., Lea, A.S., Farrow, R.F.C., Folks, L., Deline, V., and Anders, S., Appl. Phys. Lett. 82, 1257 (2003)
12. Prater, J.T., Ramachandran, S., Tiwari, A., and Narayan, J., J. Elec. Mater. 35, 852 (2006)
13. Ramachandran, S., Narayan, J., and Prater, J.T., Appl. Phys. Lett. 90, 132511(2007)
14. Bhatt, R.N., Berciu, M, Kennett, M.P. and Win, X., J. of Superconductivity 15, 71(2002)

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Magnetic and Electronic Properties of n-type (Al,Ga) co-doped Zn(Cu)O based Dilute Magnetic Semiconductors

  • Deepayan Chakraborti (a1), John T. Prater (a2) and Jagdish Narayan (a3)

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