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*

*此作品的通信作者

研究成果: Article同行評審

11 引文 斯高帕斯(Scopus)

摘要

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.

原文English
頁(從 - 到)725-731
頁數7
期刊Applied Physics A: Materials Science and Processing
118
發行號2
DOIs
出版狀態Published - 1 1月 2014

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