Record link: 
http://hdl.handle.net/20.500.12708/171401
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Title: 
Ordered Iron Oxide Nanotube Arrays of Controlled Geometry and Tunable Magnetism by Atomic Layer Deposition
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Citation: 
Bachmann, J., Jing, J., Knez, M., Barth, S. C., Shen, H., Mathur, S., Gösele, U., & Nielsch, K. (2007). Ordered Iron Oxide Nanotube Arrays of Controlled Geometry and Tunable Magnetism by Atomic Layer Deposition. Journal of the American Chemical Society, 129(31), 9554–9555. https://doi.org/10.1021/ja072465w
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Publisher DOI: 
10.1021/ja072465w
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Publication Type: 
Article - Original Research Article
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Language: 
English
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Authors: 
Bachmann, Julien 
Jing, Jing 
Knez, Mato 
Barth, Sven Christian 
Shen, Hao 
Mathur, Sanjay 
Gösele, Ulrich 
Nielsch, Kornelius 
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Journal: 
Journal of the American Chemical Society 
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ISSN: 
0002-7863
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Date (published): 
2007
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Number of Pages: 
2
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Publisher: 
AMER CHEMICAL SOC
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Peer reviewed: 
Yes
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Keywords: 
Biochemistry; General Chemistry; Catalysis; Colloid and Surface Chemistry
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Abstract: 
Iron oxide nanotubes of 50-150 nm outer diameter and 2-20 nm wall thickness are prepared in ordered arrays. Atomic layer deposition (ALD) of Fe2O3 from the precursor iron(III) tert-butoxide at 130-180 degrees C yields very smooth coverage of the pore walls of anodic alumina templates, with thickness growth of 0.26(+/- 0.04) A per cycle. The reduced Fe3O4 tubes are hard ferromagnets, and variations of the wall thickness dw have marked consequences on the magnetic response of the tube arrays. For 50 nm outer diameter, tubes of dw = 13 nm yield the largest coercive field (H{c} > 750 Oe), whereas lower coercivities are observed on both the thinner and thicker sides of this optimum.
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Research Areas: 
Materials Characterization: 35%
Non-metallic Materials: 30%
Structure-Property Relationship: 35%
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Science Branch: 
Chemie
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Appears in Collections:
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