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Abstract:
The crystal structure, electronic structure and ferromagnetic properties of the transition metals M (where M=Co, Ag) doped rutile TiO 2 are studied by using first-principles calculations based on the density functional theory (DFT) and projector augmented wave (PAW) pseudo-potentials (PP) method. In the doped system M 2Ti 14O 32, the two doping atoms tend to align along c axis in the stablest configuration state. When M represents Co atom, the ferromagnetic state is favorable with magnetic moments of 0.99μB per Co atom, while Ag 2Ti 14O 32 has no magnetic moment. Doping atoms induce new energy level, which reduces band gap, decreases Fermi energy level and thus considerably affects the optical absorption and photocatalytic activities of TiO 2 under visible light irradiation.
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Advanced Materials Research
ISSN: 1022-6680
Year: 2012
Volume: 399-401
Page: 1789-1792
Language: English
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ESI Highly Cited Papers on the List: 0 Unfold All
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30 Days PV: 0
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