Layanan journal yang disediakan oleh Perpustakaan Universitas Gunadarma
| Judul Artikel | : | THE SEMI-QUANTITATIVE STUDY OF MAGNETIZA TION PROCESS ON MILLING AND REANNEALING OF BARIUM HEXAFERRITE (BaO.6Fe20J) |
|---|---|---|
| Judul Terbitan | : | Atom Indonesia |
| ISSN | : | 0126-1568 |
| Bahasa | : | ENG |
| Tempat Terbit | : | Jakarta |
| Tahun | : | 0000 |
| Volume | : | Vol. 35 Issue 2 0000 |
| Penerbit | : | BATAN Puspitek Serpong |
| Frekuensi Penerbitan | : | 2x per Tahun |
| Penulis | : | Ridwari", Mujamilah' and A_ lohan |
| Abstraksi | : | THE SEMI-QlJANTITATIVE STlJDY OF MAGNETIZATION PROCESS ON MILLING AND REANNEALING OF BARIUM HEXAFERRITE (BaO_6FezOJ)_ Barium hexaferrite (BaO.6Fe20J) is as a hard magnetic material with good chemical. stability which has been intensively used as permanent magnet components. Many works have been done in order to improve their magnetic properties either through chemical process or powders metallurgy technique. In this work, commercial BaO.6Fe203 was milled using high-energy milling machine for 10, 20 and 30 hours and followed by reannealing for 3 hours at 1000 °C in air. X-ray diffraction pattern indicate no phase decomposition occurred caused the mill processing, annealing of milled powders recovered the crystal system and promoted crystallite growth. ';'he magnetic hysteresis curve measured by vibrating sample magnetometer (VSM) shows the coercivity of annealed Ba06Fe20) increases to two times higher than the original one. By using Jiles-Atherton model, all the hysteresis parameters M,., k, a, a and c, have been determined adopted to the Genetic Algorithm (GA). The analyzed hysteretic parameters obtained from this work is congruent to the change of magnetic properties of as-milled and annealed powders of barium hcxaferrite. |
| Kata Kunci | : | Barium hcxaferrite; penggilingan tinggi energi; sifat magnetik; JA model; XRD |
| Lokasi | : | P105 |
| Terakreditasi | : | belum |