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Journal of Nanomaterials
Volume 2016, Article ID 1637091, 9 pages
Research Article

Synthesis of FeNi Alloy Nanomaterials by Proteic Sol-Gel Method: Crystallographic, Morphological, and Magnetic Properties

1Laboratório de Raios X, Departamento de Física, Universidade Federal do Ceará, 60455-970 Fortaleza, CE, Brazil
2Programa de Pós-Graduação em Ciência e Tecnologia de Materiais, Universidade Estadual Paulista, 17033-360 Bauru, SP, Brazil
3Laboratório de Magnetismo e Materiais Magnéticos, Departamento de Engenharia Metalúrgica e de Materiais, Universidade Federal do Ceará, 60440-554 Fortaleza, CE, Brazil
4Laboratório de Peneiras Moleculares, Instituto de Química, Universidade Federal do Rio Grande do Norte, 59078-970 Natal, RN, Brazil
5Departamento de Física, Universidade do Estado do Rio Grande do Norte, 59625-620 Mossoró, RN, Brazil

Received 4 July 2016; Revised 24 October 2016; Accepted 27 October 2016

Academic Editor: Edward A. Payzant

Copyright © 2016 Cássio Morilla dos Santos et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


Proteic Sol-Gel method was used for the synthesis of FeNi alloy at different temperature conditions and flow reduction. The solids were characterized by XRD, H2-TPR, SEM, TEM, Mössbauer spectroscopy, and VSM. It was observed by X-ray diffraction pure FeNi alloy in the samples reduced at 600°C (40 mL/min H2 flow) and 700°C (25 mL/min H2 flow). The FeNi alloy presented stability against the oxidizing atmosphere up to 250°C. The morphology exhibited agglomerates relatively spherical and particles in the range of 10–40 nm. Mössbauer spectroscopy showed the presence of disordered ferromagnetic FeNi alloy, and magnetic hysteresis loop revealed a typical behavior of soft magnetic material.