Doping concentration dependence of microstructure and magnetic behaviours in Co-doped TiO2 nanorods

Li Ting Tseng; Xi Luo; Thiam Teck Tan; Sean Li; Jiabao Yi

doi:10.1186/1556-276X-9-673

Doping concentration dependence of microstructure and magnetic behaviours in Co-doped TiO₂ nanorods

Li Ting Tseng, Xi Luo, Thiam Teck Tan, Sean Li, Jiabao Yi^*

^*Corresponding author for this work

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

39 Scopus citations

Abstract

Co-doped titanium dioxide (TiO₂) nanorods with different doping concentrations were fabricated by a molten salt method. It is found that the morphology of TiO₂ changes from nanorods to nanoparticles with increasing doping concentration. The mechanism for the structure and phase evolution is investigated in detail. Undoped TiO₂ nanorods show strong ferromagnetism at room temperature, whereas incorporating of Co deteriorates the ferromagnetic ordering. X-ray photoelectron spectroscopy (XPS) and electron spin resonance (ESR) results demonstrate that the ferromagnetism is associated with Ti vacancy.

Original language	English
Article number	673
Journal	Nanoscale Research Letters
Volume	9
Issue number	1
DOIs	https://doi.org/10.1186/1556-276X-9-673
State	Published - 1 Dec 2014
Externally published	Yes

Bibliographical note

Publisher Copyright:
© 2014, Tseng et al.; licensee Springer.

Keywords

Ferromagnetism
Nanorods
Ti vacancy
TiO

ASJC Scopus subject areas

General Materials Science
Condensed Matter Physics

Access to Document

10.1186/1556-276X-9-673

Cite this

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abstract = "Co-doped titanium dioxide (TiO2) nanorods with different doping concentrations were fabricated by a molten salt method. It is found that the morphology of TiO2 changes from nanorods to nanoparticles with increasing doping concentration. The mechanism for the structure and phase evolution is investigated in detail. Undoped TiO2 nanorods show strong ferromagnetism at room temperature, whereas incorporating of Co deteriorates the ferromagnetic ordering. X-ray photoelectron spectroscopy (XPS) and electron spin resonance (ESR) results demonstrate that the ferromagnetism is associated with Ti vacancy.",

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AU - Yi, Jiabao

PY - 2014/12/1

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AB - Co-doped titanium dioxide (TiO2) nanorods with different doping concentrations were fabricated by a molten salt method. It is found that the morphology of TiO2 changes from nanorods to nanoparticles with increasing doping concentration. The mechanism for the structure and phase evolution is investigated in detail. Undoped TiO2 nanorods show strong ferromagnetism at room temperature, whereas incorporating of Co deteriorates the ferromagnetic ordering. X-ray photoelectron spectroscopy (XPS) and electron spin resonance (ESR) results demonstrate that the ferromagnetism is associated with Ti vacancy.

KW - Ferromagnetism

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