Alief Muhammad, Poppy Puspitasari, Andoko
Samarium as rare-earth materials has excellent magnetic properties when synthesized and combined with cobalt. This paper aims to synthesized SmCo5 through the sol-gel method with a variation of sintering temperatures at 400, 500, and 600°C to explore some of the properties and possibilities that can be created from these materials. Then, X-ray Diffraction raised the presence single-phased by occurred the crystallites on all samples in all temperature variations with crystallite sizes that calculated by the Scherrer's equation. The results are as follows 17.730; 15.197; and 13.296 nm in 400, 500, and 600°C samples respectively. The morphology showed in SEM results that the particle shapes and sizes were relatively large and agglomerated. The average size of particles of the three sample in 400, 500, and 600°C sintering temperature are 153.86; 154,81; 193.56 nm. Some bonds on the samples detected on FTIR result. Those are alkyl halides, alkanes, and esters with aromatic functional groups on the fingerprint area; and alkynes, alkyl halides, and alcohol functional groups in above 1500/cm wavelength. The magnetic properties test result using VSM indicated that the material is classified as soft magnet material with high coercivity and retentivity in samples sintered at 500°C. However, the highest saturation occurred in samples sintered at 400°C. © 2019 Author(s).
Department of Mechanical Engineering, Universitas Negeri Malang, Indonesia; Centre of Advanced Material and Renewable Energy, Universitas Negeri Malang, Indonesia
