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

Research output: Contribution to journalArticle

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 languageEnglish
Pages (from-to)725-731
Number of pages7
JournalApplied Physics A: Materials Science and Processing
Volume118
Issue number2
DOIs
Publication statusPublished - 2014 Jan 1

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Ferromagnetism
Nitrogen
Carbon
Oxygen vacancies
Fermi level
Powders
Temperature
Density functional theory
X ray photoelectron spectroscopy
Doping (additives)
Impurities
Ions
Oxygen
titanium dioxide

ASJC Scopus subject areas

  • Chemistry(all)
  • Materials Science(all)

Cite this

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 journalArticle

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. / Room-temperature ferromagnetism in carbon- and nitrogen-doped rutile TiO2 In: Applied Physics A: Materials Science and Processing. 2014 ; Vol. 118, No. 2. pp. 725-731.
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AU - Wu, Kuei Ching

AU - Mi, Jyun Wei

AU - Luo, Chih Wei

AU - Wu, Kaung Hsiung

AU - Uen, Tzeng Ming

AU - Lin, Jiunn Yuan

AU - Juang, Jenh Yih

AU - Liu, Shiu-Jen

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