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Synthesis of Cobalt ferrite nanowires using FeOOH as a template

Jose G. Camacho 1Carlos A. Martínez 1Humberto A. Monreal-Romero 2Perla E. Garcia-Casillas 1

1. Universidad Autonoma de Ciudad Juarez, Ave. del Charro 450 Norte, Juarez 32360, Mexico
2. Universidad Autónoma de Cd. Chihuahua, Ave. Escorza y Venustiano Carranza s/n, Chiuahua 3100, Mexico

Abstract

In this work cobalt ferrite nanowires were synthesized by chemical synthesis by the use of FeOOH as template.  The FeOOH nanorods were obtained by the hydrolysis of ferric chloride, afterwards the cobalt ion (Co+2) was added and precipitated in order to interact with the FeOOH.  The FeOOH nanorods has a diameter size of 19 and 65 nm length, these nanorods were grouped in packages with different orientation due to the cobalt interaction. These agglomerates were calcinated at different temperatures since 700 to 1000 °C, the obtained product was a cobalt nanowires with a diameter of 70 nm and some microns of length.

The average size of the nanorods and nanowires were determined by field emission scanning electron microscopy (FESEM). In order to understand the interaction mechanism between nanorods and the cobalt ions Fourier transform infrared spectroscopy (FTIR) was used.  The transformation of these particles was studied by thermogravimetric and differential thermal analysis (TGA-DTA). The magnetic properties, intrinsic coercivity (Hc) and the saturation magnetization were determined by vibrating sample magnetometry (VSM). The identification of phases was made by X-ray Diffraction.

 

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Related papers

Presentation: Poster at E-MRS Fall Meeting 2008, Symposium F, by Perla E. Garcia-Casillas
See On-line Journal of E-MRS Fall Meeting 2008

Submitted: 2008-05-20 05:24
Revised:   2009-06-07 00:48