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Issue 62, 2016, Issue in Progress
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Oxygen vacancy-related room temperature ferromagnetism in TiO2 nanohole arrays

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Abstract

Room temperature ferromagnetism was observed in hole-like TiO2 nanostructure arrays prepared by a monolayer colloidal crystal template. The saturation magnetization (MS) is 0.46 emu gāˆ’1 for the as-grown array, which is stronger than that of pristine TiO2 magnetic semiconductors in other work. It is found that the MS exhibits a monotonous decrease with increasing annealing temperature. Results show that the ferromagnetism behavior of the TiO2 nanoarray is related to oxygen vacancies on the surface of nanoparticles, and MS is determined by the concentration of oxygen vacancies. This work will provide a facile way to fabricate magnetic semiconductor nanoarrays and tailor their ferromagnetism for the application in spin-based nanodevices.

Graphical abstract: Oxygen vacancy-related room temperature ferromagnetism in TiO2 nanohole arrays

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Publication details

The article was received on 06 Apr 2016, accepted on 08 Jun 2016 and first published on 10 Jun 2016


Article type: Paper
DOI: 10.1039/C6RA08833C
RSC Adv., 2016,6, 57013-57018

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    Oxygen vacancy-related room temperature ferromagnetism in TiO2 nanohole arrays

    Y. Liu, S. Feng, Z. Li, L. Zhang, G. Wang, W. Chen, T. Wang and W. Zhong, RSC Adv., 2016, 6, 57013
    DOI: 10.1039/C6RA08833C

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