Room temperature ferromagnetism in N-doped rutile TiO2 films

N. N. Bao; H. M. Fan; J. Ding; J. B. Yi

doi:10.1063/1.3535427

Room temperature ferromagnetism in N-doped rutile TiO₂ films

N. N. Bao, H. M. Fan, J. Ding, J. B. Yi

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

55 Scopus citations

Abstract

Room temperature ferromagnetism has been experimentally observed in TiO₂:N films prepared by pulse laser deposition under N₂O atmosphere. The ferromagnetism appears when the N₂O partial pressure is higher than 10^-5 Torr. XPS study has revealed that N substitutes O at the partial pressure of 10^-5 Torr, whereas additional N atoms occupy interstitial sites besides substituting N at higher N₂O partial pressures. Our study indicates that the origin of the ferromagnetism is the O substitution with N. Each substituted N has a magnetic moment of approximately 0.9 _B. The substitution of O also resulted in p-type behavior, accompanied with magnetoresistance and anomalous Hall effect.

Original language	English
Article number	07C302
Journal	Journal of Applied Physics
Volume	109
Issue number	7
DOIs	https://doi.org/10.1063/1.3535427
State	Published - 1 Apr 2011
Externally published	Yes

ASJC Scopus subject areas

General Physics and Astronomy

Access to Document

10.1063/1.3535427

Cite this

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title = "Room temperature ferromagnetism in N-doped rutile TiO2 films",

abstract = "Room temperature ferromagnetism has been experimentally observed in TiO2:N films prepared by pulse laser deposition under N2O atmosphere. The ferromagnetism appears when the N2O partial pressure is higher than 10-5 Torr. XPS study has revealed that N substitutes O at the partial pressure of 10-5 Torr, whereas additional N atoms occupy interstitial sites besides substituting N at higher N2O partial pressures. Our study indicates that the origin of the ferromagnetism is the O substitution with N. Each substituted N has a magnetic moment of approximately 0.9 B. The substitution of O also resulted in p-type behavior, accompanied with magnetoresistance and anomalous Hall effect.",

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T1 - Room temperature ferromagnetism in N-doped rutile TiO2 films

AU - Bao, N. N.

AU - Fan, H. M.

AU - Ding, J.

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N2 - Room temperature ferromagnetism has been experimentally observed in TiO2:N films prepared by pulse laser deposition under N2O atmosphere. The ferromagnetism appears when the N2O partial pressure is higher than 10-5 Torr. XPS study has revealed that N substitutes O at the partial pressure of 10-5 Torr, whereas additional N atoms occupy interstitial sites besides substituting N at higher N2O partial pressures. Our study indicates that the origin of the ferromagnetism is the O substitution with N. Each substituted N has a magnetic moment of approximately 0.9 B. The substitution of O also resulted in p-type behavior, accompanied with magnetoresistance and anomalous Hall effect.

AB - Room temperature ferromagnetism has been experimentally observed in TiO2:N films prepared by pulse laser deposition under N2O atmosphere. The ferromagnetism appears when the N2O partial pressure is higher than 10-5 Torr. XPS study has revealed that N substitutes O at the partial pressure of 10-5 Torr, whereas additional N atoms occupy interstitial sites besides substituting N at higher N2O partial pressures. Our study indicates that the origin of the ferromagnetism is the O substitution with N. Each substituted N has a magnetic moment of approximately 0.9 B. The substitution of O also resulted in p-type behavior, accompanied with magnetoresistance and anomalous Hall effect.

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