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      Permanent link:
      https://www.ias.ac.in/article/fulltext/boms/034/07/1407-1413

    • Keywords

       

      Soft magnetic materials; FINEMET; raw materials; product technology; structural and magnetic properties.

    • Abstract

       

      The consistent interest in supporting research and development of magnetic materials during the last century is revealed in their steadily increasing market. In this work, the soft magnetic nanocrystalline FINEMET alloy was prepared with commercial purity raw materials and compared for the first time with the generally studied high purity one. The exhaustive characterization covers several diverse techniques: X-ray diffraction, Mössbauer spectroscopy, differential scanning calorimetry, differential thermal analysis and magnetic properties. In addition, a brief economic analysis is presented. For the alloys annealed at 813 K, the value of the grain size was 16 nm with 19.5% of Si, the coercivity was 0.30 A m-1 while the saturation was 1.2 T. These results prove that structural, magnetic and thermal properties of this material are very close to the expensive high purity FINEMET alloy, while a cost reduction of almost 98% seems highly attractive for laboratories and industry. The analysis should be useful not only for the production of FINEMETs, but for other type of systems with similar constitutive elements as well, including soft and hard magnetic materials.

    • Author Affiliations

       

      Josefina M Silveyra1 Emília Illeková2 Marco Coïsson3 Federica Celegato3 Franco Vinai3 Paola Tiberto3 Javier A Moya1 Victoria J Cremaschi1

      1. Lab. de Sólidos Amorfos, INTECIN, FIUBA-CONICET, Paseo Colón 850, (C1063ACV) Buenos Aires, Argentina
      2. Institute of Physics SAS, Dúbravská cesta 9, 845 11 Bratislava, Slovak Republic
      3. Istituto Nazionale di Ricerca Metrologica, Strada delle Cacce 91, I-10135 Torino, Italy
    • Dates

       
  • Bulletin of Materials Science | News

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      Posted on July 25, 2019

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