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Structural and magnetic properties of SmCo5+30%α-Fe exchange coupled nanocomposites obtained by mechanical milling

R. HIRIAN1, O. ISNARD2,3, V. POP1,*

Affiliation

  1. Faculty of Physics, Babeş-Bolyai University, Cluj-Napoca, RO-400084 Romania
  2. University Grenoble Alpes, Institut NÉEL, 25 rue des martyrs, F-38042 Grenoble, France
  3. CNRS, Institut NÉEL, 25 rue des martyrs, F-38042 Grenoble, France

Abstract

The magnetic and structural properties of SmCo5+30%Fe magnetic nanocomposites obtained through mechanical milling are investigated by DSC, TGA, XRD and magnetic measurements. It is shown that above 923 K (650 °C) the hard and soft magnetic phases react to form Sm2(Co-Fe)17 as the hard magnetic phase and Fe-Co as the soft magnetic phase which leads to a significant loss of anisotropy. The difference in magnetic behavior between the nanocomposites exposed to high temperatures (up to 1323 K, 1050 °C) and those annealed at 873 K (600 °C) was analyzed..

Keywords

Nanocomposite, Spring magnet, Phase transition, Exchange coupling, Magnetic properties.

Submitted at: March 1, 2019
Accepted at: Oct. 9, 2019

Citation

R. HIRIAN, O. ISNARD, V. POP, Structural and magnetic properties of SmCo5+30%α-Fe exchange coupled nanocomposites obtained by mechanical milling, Journal of Optoelectronics and Advanced Materials Vol. 21, Iss. 9-10, pp. 618-622 (2019)