Room-temperature ferromagnetism in Cu-doped ZnO thin films

D. B. Buchholz; R. P.H. Chang; J. Y. Song; J. B. Ketterson

doi:10.1063/1.2032588

Room-temperature ferromagnetism in Cu-doped ZnO thin films

D. B. Buchholz, R. P.H. Chang, J. Y. Song, J. B. Ketterson

Research output: Contribution to journal › Article › peer-review

415 Scopus citations

Abstract

A series of copper-doped zinc oxide films were grown by pulsed-laser ablation. Films grown under conditions that produced n -type ZnO were nonmagnetic while those grown under conditions that produced p -type were ferromagnetic with a Curie temperature above 350 K. The magnetic moment per copper atom decreased as the copper concentration increased. An explanation for this result is proposed based on the distance between nearest-neighbor copper atoms.

Original language	English (US)
Article number	082504
Journal	Applied Physics Letters
Volume	87
Issue number	8
DOIs	https://doi.org/10.1063/1.2032588
State	Published - Aug 22 2005

Funding

The authors would like to thank L-H. Ye and A. J. Freeman of the Physics Department for their helpful discussions with regard to ZnO:Cu. This work was supported in part by the MRSEC program of the National Science Foundation under Grant No. DMR-0076097, NASA under Award No. NCC 2-1363, and by DARPA under Grant No. N00014-02-1-0887.

ASJC Scopus subject areas

Physics and Astronomy (miscellaneous)

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10.1063/1.2032588

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title = "Room-temperature ferromagnetism in Cu-doped ZnO thin films",

abstract = "A series of copper-doped zinc oxide films were grown by pulsed-laser ablation. Films grown under conditions that produced n -type ZnO were nonmagnetic while those grown under conditions that produced p -type were ferromagnetic with a Curie temperature above 350 K. The magnetic moment per copper atom decreased as the copper concentration increased. An explanation for this result is proposed based on the distance between nearest-neighbor copper atoms.",

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AU - Ketterson, J. B.

N1 - Funding Information: The authors would like to thank L-H. Ye and A. J. Freeman of the Physics Department for their helpful discussions with regard to ZnO:Cu. This work was supported in part by the MRSEC program of the National Science Foundation under Grant No. DMR-0076097, NASA under Award No. NCC 2-1363, and by DARPA under Grant No. N00014-02-1-0887.

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N2 - A series of copper-doped zinc oxide films were grown by pulsed-laser ablation. Films grown under conditions that produced n -type ZnO were nonmagnetic while those grown under conditions that produced p -type were ferromagnetic with a Curie temperature above 350 K. The magnetic moment per copper atom decreased as the copper concentration increased. An explanation for this result is proposed based on the distance between nearest-neighbor copper atoms.

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Room-temperature ferromagnetism in Cu-doped ZnO thin films

Abstract

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