Sintesis dan Karakterisasi Sifat Magnetik Serbuk Barium M-Heksaferrit dengan Doping Ion Zn pada Variasi Temperatur Rendah

Abstract

Sintesis Barium M-Heksaferrit (BaFe_11,4Zn_0,6O₁₉) doping ion Zn telah dilakukan dengan metode kopresipitasi. Bahan yang digunakan dalam sintesis yaitu BaCO­₃, FeCl₃.6H₂O dan ion Zn. Dalam penelitian ini digunakan variasi suhu kalsinasi pada temperatur rendah yaitu 80^oC, 150^oC, 200^oC dan 280^oC selama 4 jam. Hasil sintesis dikarakterisasi dengan DSC-TGA (Differential Scanning Calorimetry – Thermogravimetric), XRD (X-ray Diffraction), SEM (Scanning Electron Microscopy) dan VSM (Vibrating Sample Magnetometer). Barium M-Heksaferrit terbentuk pada temperatur 150^oC sebesar 72,54% dan mempunyai ukuran partikel sebesar 0,5μm. Kurva histerisis menunjukkan telah terbentuk softmagnetic dengan magnetisasi remanensi (Mr) sebesar 0,01 emu/gr, medan koersivitas (Hc) sebesar 0,00825 Tesla dan mempunyai magnetisasi tertinggi terjadi ketika medan koersivitas (Hc) sebesar 1 Tesla dengan magnetisasi sebesar 0,55 emu/gr.

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