Controlled synthesis and assembly into anisotropic arrays of magnetic cobalt-substituted magnetite nanocubes

Weiwei Yang; Yongsheng Yu; Liang Wang; Chunhui Yang; Haibo Li

doi:10.1039/C4NR07331B

Controlled synthesis and assembly into anisotropic arrays of magnetic cobalt-substituted magnetite nanocubes†

Weiwei Yang,^a Yongsheng Yu,*^a Liang Wang,^b Chunhui Yang^a and Haibo Li^c

* Corresponding authors

^a School of Chemical Engineering and Technology, Harbin Institute of Technology, Harbin, Heilongjiang 150001, China
E-mail: ysyu@hit.edu.cn

^b School of Materials Science and Engineering, Harbin Institute of Technology, Harbin 150001, China

^c Key Laboratory of Functional Materials Physics and Chemistry of the Ministry of Education, Jilin Normal University, Changchun 130103, China

Abstract

Cubic cobalt-substituted magnetite Co_xFe_3−xO₄ nanocubes (NCs) with uniform composition distributions of Co, Fe and O in the NCs, obtained via solution synthesis, are reported in this paper. Through the control of the reaction conditions, the size of the cubic NCs could be tuned from 35 to 110 nm. It was found that the cubic shape could easily induce the (400) orientation of the NCs on a Si substrate, and applying an external magnetic field in the out-of-plane direction could further enhance the (400) orientation of these NCs on the Si substrate. The highest coercivity of 2.07 kOe could be obtained by assembling the NCs in the external magnetic field. The reported magnetic cobalt-substituted magnetite NCs provide an ideal class of building blocks for studying ferrimagnetic nanoparticle (NP) assemblies with easily controlled magnetic alignment for magnetic tape recording with ever increased areal storage density.

Supplementary files

Article information

DOI: https://doi.org/10.1039/C4NR07331B
Article type: Communication
Submitted: 11 Dec 2014
Accepted: 13 Jan 2015
First published: 13 Jan 2015

Download Citation

Nanoscale, 2015,7, 2877-2882

Author version available

Download author version (PDF)

Permissions

Request permissions

Controlled synthesis and assembly into anisotropic arrays of magnetic cobalt-substituted magnetite nanocubes

W. Yang, Y. Yu, L. Wang, C. Yang and H. Li, Nanoscale, 2015, 7, 2877 DOI: 10.1039/C4NR07331B

To request permission to reproduce material from this article, please go to the Copyright Clearance Center request page.

If you are an author contributing to an RSC publication, you do not need to request permission provided correct acknowledgement is given.

If you are the author of this article, you do not need to request permission to reproduce figures and diagrams provided correct acknowledgement is given. If you want to reproduce the whole article in a third-party publication (excluding your thesis/dissertation for which permission is not required) please go to the Copyright Clearance Center request page.

Nanoscale

Controlled synthesis and assembly into anisotropic arrays of magnetic cobalt-substituted magnetite nanocubes†

Abstract

Supplementary files

Article information

Download Citation

Author version available

Permissions

Controlled synthesis and assembly into anisotropic arrays of magnetic cobalt-substituted magnetite nanocubes

Social activity

Search articles by author

Spotlight

Advertisements