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Inducing Magnetism in Wide Band Gap Hosts

  • Ram Seshadri (a1), Aditi S. Risbud (a1) and Gavin Lawes (a2)

Abstract

We have used precursor routes to prepare magnetic transition metal ion (tM) substituted wurtzite ZnO powders with up to 15% tM substitution (tM = Co and Mn) on the cation site. Careful magnetic studies reveal these samples show no cooperative magnetic ordering, and certainly no ferromagnetism. Instead, the nearest-neighbor coupling is actually antiferromagnetic. Modeling of the temperature dependence of the magnetic susceptibility indicates the difficulty in inducing ferromagnetism, in keeping with the results of density functional calculations. The alternate strategy of inducing dilute ferri magnetism in wide band gap spinel hosts with two cation sites has been more successful; dilute magnets based on tM substitution in spinel ZnGa2O4 seem promising, displaying magnetic hysteresis in nearly transparent samples.

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[1] Dietl, T., Ohno, H., Matsukura, F., Cibért, J., and Ferrand, D., Science 287, 1019 (2000).
[2] Kolesnik, S., Dabrowski, B., and Mais, J., J. Supercond. 15, 251 (2002).
[3] Fukumura, T., Jin, Z., Kawasaki, M., Shono, T., Hasegawa, T., Koshihara, S., and Koinuma, H., Appl. Phys. Lett. 78, 958 (2001).
[4] Yoon, S.W., Cho, S.-B., We, S.C., Yoon, S., Suh, B.J., Song, H.K., and Shin, Y.J., J. Appl. Phys. 93, 7879 (2002).
[5] Brumage, W.H., Dorman, C.F., and Quade, C.R., Phys. Rev. B 63, 104411 (2001).
[6] Kolesnik, S., Dabrowksi, B., and Mais, J., J. Appl. Phys. 95, 2582 (2003).
[7] Sharma, P., Gupta, A., Owens, F.J., Rao, K.V., Sharma, R., Ahuja, R., Osorio Guillen, J.M., Johannson, B., and Gehring, G.A., Nature Mater. 2, 673 (2003).
[8] Schwartz, D.A., Norberg, N.S., Nguyen, Q.P., Parker, J.M., and Gamelin, D.R., J. Am. Chem. Soc. 125, 13205 (2003).
[9] Risbud, A.S., Spaldin, N.A., Chen, Z.Q., Stemmer, S., and Seshadri, R., Phys. Rev. B 68, 205202 (2003).
[10] Lawes, G., Risbud, A.S., Ramirez, A.P., and Seshadri, R., cond-mat/0403196 (accepted for publication in Phys. Rev. B).
[11] Bérar, J.-F. and Garnier, P., 1992 computer code XND available from the website at http://www.ccp14.ac.uk.
[12] Stauffer, D. and Aharony, A., Introduction to Percolation Theory, Taylor and Francis, London, 1992.

Inducing Magnetism in Wide Band Gap Hosts

  • Ram Seshadri (a1), Aditi S. Risbud (a1) and Gavin Lawes (a2)

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