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

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Title: Synthesis of Magnetic CuNi Nanoalloys by Sol-Gel-Based Pechini Method.
Authors: de Leon-Quiroz, E. L.1, Obregon, D. Vazquez2, Pedraza, A. Ponce3, Jose-Yacaman, M.4, Garcia-Cerda, L. A.1
Source: IEEE Transactions on Magnetics. Aug2013 Part 1, Vol. 49 Issue 8, p4522-4524. 3p.
Subjects: Copper alloys, Magnetic properties of metals, Sol-gel processes, Chemical precursors, Atomic absorption spectroscopy, X-ray scattering, Temperature measurements
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 ^\circC. 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. [ABSTRACT FROM PUBLISHER]
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Database: Engineering Source
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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 ^\circC. 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. [ABSTRACT FROM PUBLISHER]
ISSN:00189464
DOI:10.1109/TMAG.2013.2259225