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Ratih Resti Astari
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The Effects of Mn Ions Dopping towards Barium Ferrite Magnet Characteristics Ratih Resti Astari; Ferry Arifiadi; Handoko Setyo Kuncoro; Tony Kristiantoro
Jurnal Keramik dan Gelas Indonesia Vol 28, No 2 (2019): Jurnal Keramik dan Gelas Indonesia
Publisher : Balai Besar Keramik

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32537/jkgi.v28i2.5786

Abstract

Magnet barium ferit merupakan salah satu jenis magnet permanen yang masih mempunyai potensi untuk dikembangkan, salah satunya dengan pemberian doping untuk mempengaruhi sifat magnetiknya. Dalam penelitian ini, telah dilakukan penambahan doping MnO dan MnO2 pada barium ferit. Metode pembuatan barium ferit yang dilakukan adalah dengan metode metalurgi serbuk dan diberikan penambahan doping MnO dan MnO2dengan variasi %berat. Hasil yang diperoleh yaitu sampel dengan doping MnO2mempunyai karakteristik sifat magnetic yang lebih tinggi jika dibandingkan dengan doping MnO. Nilai doping MnO2 terbaik pada komposisi 1,5% dengan nilai Br 1,91kG, Hcj 3,073 kOe dan BHmax 0,76 MGOe. Dari penelitian ini, dapat disimpulkan doping MnO2relatif lebih baik digunakan untuk meningkatkan sifat magnetik magnet barium ferit.
Characterization of Magnetic and Density Properties on Barium Ferrite with MnO2 Addition Ratih Resti Astari; Handoko Setyo Kuncoro; Didit Nur Rahman; Toni Kristiantoro
Jurnal Keramik dan Gelas Indonesia Vol 26, No 1 (2017): Jurnal Keramik dan Gelas Indonesia
Publisher : Balai Besar Keramik

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32537/jkgi.v26i1.3912

Abstract

The addition of MnO2 in synthesis of barium ferrite magnet were prepared by powder metallurgy method with variation formula of MnO2 0%, 0.1%, 0.2%, 0.3%, 0.5% and 1% sintered at 1175 ºC. Material characterization includes X-Ray Diffraction (XRD), Scanning Electron Microscope (SEM) and permagraph were employed to investigate the effect of MnO2 addition to magnetic properties and sample density. Hysteresis curve using permagraph showed that the addition of MnO2 have an effect on the increasing of magnetic properties and density. Remanence induction (Br), coercivity (Hc) and density (ρ) reached the maximum value of 1.36 kG, 2.757 kOe and 4.29 g/cm3  respectively  on different formula MnO2. The best value of MnO2 addition could be concluded on the addition MnO2 of 0.3% with Br = 1.36 kG, Hc = 2.683 kOe, and ρ = 4.29 g/cm3. The XRD results showed the formed of barium ferrite phase in the sintered sample at 1175ºC. While the SEM result revealed that the addition of MnO2 affected the density of barium ferrite particles.
Co-Authors Bambang Prihandoko Bambang Sunendar Purwasasmita Didit Nur Rahman Evvy Kartini ferry arifiadi Handoko Setyo Kuncoro Hendra Kustiawan Muhammad Syaifun Nizar Nurhidayati Nurhidayati Rifki Septawendar Suhanda S Toni Kristiantoro Tony Kristiantoro