Synthesis, Magnetic Anisotropy and Optical Properties of Preferred Oriented Zinc Ferrite Nanowire Arrays

Preferred oriented ZnFe 2 O 4 nanowire arrays with an average diameter of 16 nm were fabricated by post-annealing of ZnFe 2 nanowires within anodic aluminum oxide templates in atmosphere. Selected area electron diffraction and X-ray diffraction exhibit that the nanowires are in cubic spinel-type str...

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Bibliographic Details
Published in:Nanoscale research letters 2010-05, Vol.5 (8), p.1289-1294
Main Authors: Gao, Daqiang, Shi, Zhenhua, Xu, Yan, Zhang, Jing, Yang, Guijin, Zhang, Jinlin, Wang, Xinhua, Xue, Desheng
Format: Article
Language:English
Subjects:
Chemistry and Materials Science
Materials Science
Molecular Medicine
Nano Express
Nanochemistry
Nanoscale Science and Technology
Nanotechnology
Nanotechnology and Microengineering
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Summary:Preferred oriented ZnFe 2 O 4 nanowire arrays with an average diameter of 16 nm were fabricated by post-annealing of ZnFe 2 nanowires within anodic aluminum oxide templates in atmosphere. Selected area electron diffraction and X-ray diffraction exhibit that the nanowires are in cubic spinel-type structure with a [110] preferred crystallite orientation. Magnetic measurement indicates that the as-prepared ZnFe 2 O 4 nanowire arrays reveal uniaxial magnetic anisotropy, and the easy magnetization direction is parallel to the axis of nanowire. The optical properties show the ZnFe 2 O 4 nanowire arrays give out 370–520 nm blue-violet light, and their UV absorption edge is around 700 nm. The estimated values of direct and indirect band gaps for the nanowires are 2.23 and 1.73 eV, respectively.
ISSN:1931-7573
1556-276X
DOI:10.1007/s11671-010-9640-z