Effect of Grain Size of Nano Composite on Raman and Magnetic Proprieties
Based Iron-cobalt alloys exhibit particularly interesting Raman and magnetic properties, with high Curie temperatures, the highest saturation magnetizations, high permeability, and low losses and is relatively strong and partial oxidation of Fe and Co. Th
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Abstract Based Iron–cobalt alloys exhibit particularly interesting Raman and magnetic properties, with high Curie temperatures, the highest saturation magnetizations, high permeability, and low losses and is relatively strong and partial oxidation of Fe and Co. The cost of these alloys has confined them, since their discovery by Elmen in 1929, to applications where the volume is small and high magnetic performances are critical. Sintering is the procedure of formation and compaction of a material. We have prepared the nano crystalline alloy by the mechanical milling process in a high energy planetary ball-mill PM400. Morphological, micro-structural, magnetic characterizations of the powders milled several times were investigated by scanning electron microscopy, X-ray diffraction, vibrating manometers sample and Raman spectroscopy. The coercivity value increase during millingtime from 0.018 to 185.9 Oe and saturation magnetization value from 42.7 to 51.1 emu/g, respectively.
A. Younes (&) M. Zergoug M. Gousmine H. Dehdouh A. Bouamer Research Center in Industrial Technologies, CRTI, P.O. Box 64, 16014 Cheraga, Algiers, Algeria e-mail: [email protected] M. Zergoug e-mail: [email protected] M. Gousmine e-mail: [email protected] A. Bouamer e-mail: [email protected] A. Younes N.E. Bacha Laboratory of Surface Treatment & Materials, University of Saad Dahleb, Ouled Yaïch, Blida, Algeria e-mail: [email protected] H. Dehdouh Ceramics laboratory, University of frères mentouri, Ain El-Bey Road (25000), Constantine, Algeria e-mail: [email protected] © Springer International Publishing Switzerland 2017 T. Boukharouba et al. (eds.), Applied Mechanics, Behavior of Materials, and Engineering Systems, Lecture Notes in Mechanical Engineering, DOI 10.1007/978-3-319-41468-3_35
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1 Introduction Iron Cobalt alloy are significant soft magnetic materials that have been usually used in industry. Compared to polycrystalline, the nano-structured materials have showed superior magnetic properties, such as higher permeability and lower coercivity due to the single domain configuration [1, 2]. However, magnetic properties of nano-materials are affected by their microstructure like the grain size, internal strain and crystal structure [3–5]. The microstructure of nano-structured materials is an important factor for enhancement of magnetic properties. Mechanical Alloying (MA) is a method with an advantage that it can be easily operated and produces large amounts of nano-structured powders in small time [6]. In the present work, the effect of microstructure in the magnetic and optical properties was studied by different techniques. The FeCo mixture was prepared by mechanical alloying (MA), the microstructure of mixture was analyzed by a scanning electron microscope (SEM) and X-ray diffraction (XRD), the magnetic and optical properties were characterized by vibrating sample magnetometer (VSM) and Raman analysis respectively.
2 Results and Discussion High purity (>99 %) iron and cobalt obtained were used as unrefin
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