Synthesis of Magnetic CuNi Nanoalloys by Sol-Gel-Based Pechini Method

Author

de Leon-Quiroz, E.L. ; Vazquez Obregon, D. ; Ponce Pedraza, A. ; Jose-Yacaman, M. ; Garcia-Cerda, L.A.

Author_Institution

Centro de Investig. en Quim. Aplic., Saltillo, Mexico

Volume

49

Issue

8

fYear

2013

fDate

Aug. 2013

Firstpage

4522

Lastpage

4524

Abstract

Magnetic CuNi nanoalloys with different compositions were prepared by sol-gel-based Pechini method. A precursor material was prepared using citric acid, ethylene glycol, copper chloride and nickel chloride. The CuNi nanoalloys were obtained by calcination of the precursor material in H₂/N₂ atmosphere at 600°C. The composition, structure, morphology and magnetic properties of the CuNi nanoalloys were characterized by atomic absorption spectroscopy (AAS), X-ray diffraction (XRD), high resolution transmission electron microscopy and vibrating sample magnetometry. AAS studies confirmed the expected Cu:Ni ratios in these nanoalloys. The XRD patterns showed the formation of fcc phase in the CuNi nanoalloys. The morphological characteristics of the CuNi nanoalloys show quasi-spherical particles with sizes in the range of 20-70 nm. Magnetic measurements reveal that the CuNi nanoalloys are typical soft magnetic materials.

Keywords

X-ray diffraction; atomic absorption spectroscopy; calcination; copper alloys; magnetometry; nanofabrication; nanomagnetics; nanostructured materials; nickel alloys; sol-gel processing; transmission electron microscopy; AAS; CuNi; X-ray diffraction; XRD; atomic absorption spectroscopy; calcination; citric acid; copper chloride; ethylene glycol; high resolution transmission electron microscopy; magnetic nanoalloys; magnetic properties; morphological properties; nickel chloride; quasi-spherical particles; sol-gel-based Pechini method; structural properties; temperature 600 degC; vibrating sample magnetometry; Calcination; Lattices; Magnetometers; Nickel; Saturation magnetization; Temperature measurement; X-ray scattering; CuNi nanoalloys; Pechini; magnetic particles; sol-gel;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/TMAG.2013.2259225

Filename

6566215