Room-temperature ferromagnetism in carbon- and nitrogen-doped rutile TiO2

Jia Bin Wang; Kuei Ching Wu; Jyun Wei Mi; Chih Wei Luo; Kaung Hsiung Wu; Tzeng Ming Uen; Jiunn Yuan Lin; Jenh Yih Juang; Shiu-Jen Liu

doi:10.1007/s00339-014-8788-2

Room-temperature ferromagnetism in carbon- and nitrogen-doped rutile TiO₂

Jia Bin Wang, Kuei Ching Wu, Jyun Wei Mi, Chih Wei Luo, Kaung Hsiung Wu, Tzeng Ming Uen, Jiunn Yuan Lin, Jenh Yih Juang, Shiu-Jen Liu

Department of Physics

Research output: Contribution to journal › Article

8 Citations (Scopus)

Abstract

Marked room-temperature ferromagnetism (RTFM) was obtained in carbon- and nitrogen-doped rutile (Formula presented.) powders. X-ray photoelectron spectroscopy measurements revealed the co-existence of considerable densities of states near the Fermi level ((Formula presented.)) and oxygen vacancies primarily induced by C- and N-doping. Density functional theory calculations showed that the local moments responsible for the observed RTFM in N-doped (Formula presented.) were primarily attributed to the partially populated, spin-polarized Ti (Formula presented.) band. In addition to the unfilled Ti (Formula presented.) band, the spin splitting in C (Formula presented.)states near (Formula presented.) in C-doped (Formula presented.), which may be induced by the (Formula presented.) interaction between the C impurities and neighboring oxygen ions, results in Stoner band-splitting-type ferromagnetism.

Original language	English
Pages (from-to)	725-731
Number of pages	7
Journal	Applied Physics A: Materials Science and Processing
Volume	118
Issue number	2
DOIs	https://doi.org/10.1007/s00339-014-8788-2
Publication status	Published - 2014 Jan 1

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ASJC Scopus subject areas

Chemistry(all)
Materials Science(all)

Cite this

Wang, J. B., Wu, K. C., Mi, J. W., Luo, C. W., Wu, K. H., Uen, T. M., Lin, J. Y., Juang, J. Y., & Liu, S-J. (2014). Room-temperature ferromagnetism in carbon- and nitrogen-doped rutile TiO₂ Applied Physics A: Materials Science and Processing, 118(2), 725-731. https://doi.org/10.1007/s00339-014-8788-2

Room-temperature ferromagnetism in carbon- and nitrogen-doped rutile TiO₂ . / Wang, Jia Bin; Wu, Kuei Ching; Mi, Jyun Wei; Luo, Chih Wei; Wu, Kaung Hsiung; Uen, Tzeng Ming; Lin, Jiunn Yuan; Juang, Jenh Yih; Liu, Shiu-Jen.

In: Applied Physics A: Materials Science and Processing, Vol. 118, No. 2, 01.01.2014, p. 725-731.

Research output: Contribution to journal › Article

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abstract = "Marked room-temperature ferromagnetism (RTFM) was obtained in carbon- and nitrogen-doped rutile (Formula presented.) powders. X-ray photoelectron spectroscopy measurements revealed the co-existence of considerable densities of states near the Fermi level ((Formula presented.)) and oxygen vacancies primarily induced by C- and N-doping. Density functional theory calculations showed that the local moments responsible for the observed RTFM in N-doped (Formula presented.) were primarily attributed to the partially populated, spin-polarized Ti (Formula presented.) band. In addition to the unfilled Ti (Formula presented.) band, the spin splitting in C (Formula presented.)states near (Formula presented.) in C-doped (Formula presented.), which may be induced by the (Formula presented.) interaction between the C impurities and neighboring oxygen ions, results in Stoner band-splitting-type ferromagnetism.",

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AU - Wu, Kuei Ching

AU - Mi, Jyun Wei

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AU - Wu, Kaung Hsiung

AU - Uen, Tzeng Ming

AU - Lin, Jiunn Yuan

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N2 - Marked room-temperature ferromagnetism (RTFM) was obtained in carbon- and nitrogen-doped rutile (Formula presented.) powders. X-ray photoelectron spectroscopy measurements revealed the co-existence of considerable densities of states near the Fermi level ((Formula presented.)) and oxygen vacancies primarily induced by C- and N-doping. Density functional theory calculations showed that the local moments responsible for the observed RTFM in N-doped (Formula presented.) were primarily attributed to the partially populated, spin-polarized Ti (Formula presented.) band. In addition to the unfilled Ti (Formula presented.) band, the spin splitting in C (Formula presented.)states near (Formula presented.) in C-doped (Formula presented.), which may be induced by the (Formula presented.) interaction between the C impurities and neighboring oxygen ions, results in Stoner band-splitting-type ferromagnetism.

AB - Marked room-temperature ferromagnetism (RTFM) was obtained in carbon- and nitrogen-doped rutile (Formula presented.) powders. X-ray photoelectron spectroscopy measurements revealed the co-existence of considerable densities of states near the Fermi level ((Formula presented.)) and oxygen vacancies primarily induced by C- and N-doping. Density functional theory calculations showed that the local moments responsible for the observed RTFM in N-doped (Formula presented.) were primarily attributed to the partially populated, spin-polarized Ti (Formula presented.) band. In addition to the unfilled Ti (Formula presented.) band, the spin splitting in C (Formula presented.)states near (Formula presented.) in C-doped (Formula presented.), which may be induced by the (Formula presented.) interaction between the C impurities and neighboring oxygen ions, results in Stoner band-splitting-type ferromagnetism.

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10.1007/s00339-014-8788-2