| Автор | Sebayang, Perdamean |
| Автор | Masbah, Muljadi |
| Автор | Siregar, R T |
| Автор | Walyo, Tomi Budi |
| Дата выпуска | 2011-12-01 |
| dc.description | A permanent magnet based on ferrite for use as components of electrical generators has been fabricated by two different methods: solid–solid mixing and cooprecipitation. The conventional solid–solid mixing method uses Fe<sub>2</sub>O<sub>3</sub> and BaCO<sub>3</sub> as starting materials with mole ratio n=BaO:Fe<sub>2</sub>O<sub>3</sub>=1: 6. The mixture is calcinated at 1100 °C and two crystal structures, BaOFe<sub>2</sub>O<sub>3</sub> and BaFe<sub>12</sub>O<sub>19</sub>, were obtained with particle size of about 0.5–1.5 μm. Sintering at 1100 °C was followed by a magnetization process. Measurements give the following physical parameter values: remanence, Br=0.0792 T; magnetic saturation, Bs=1.21 T; coersivity, Hc=44.7 kA m<sup>-1</sup>; density 3.43 g cm<sup>-3</sup> and porosity 9.16%. On the other hand, the cooprecipitation method uses FeCl<sub>3</sub> and BaCl<sub>2</sub> solution with mole ratio n=BaCl<sub>2</sub>:FeCl<sub>3</sub>=1:6. After the calcination at 900 °C and higher temperatures a single crystal structure of BaO·6Fe<sub>2</sub>O<sub>3</sub> is formed with particle size of about 30–60 nm. The optimum sintering temperature for the formation of this single phase crystal structure is 1050 °C. The physical parameters of the final product have the following values: Br=0.2673 T; Bs=1.42 T; Hc=89.4 kA m<sup>-1</sup>; density 4.34 g cm<sup>-3</sup> and porosity 3.36%. |
| Формат | application.pdf |
| Издатель | Institute of Physics Publishing |
| Копирайт | 2011 Vietnam Academy of Science & Technology |
| Название | Ferrite-based material as a permanent magnet for components of electrical generators |
| Тип | paper |
| DOI | 10.1088/2043-6262/2/4/045016 |
| Electronic ISSN | 2043-6262 |
| Print ISSN | 2043-6254 |
| Журнал | Advances in Natural Sciences: Nanoscience and Nanotechnology |
| Том | 2 |
| Первая страница | 45016 |
| Последняя страница | 45020 |
| Аффилиация | Sebayang, Perdamean; Research Center for Physics, Indonesia Institute of Sciences, Serpong Puspiptek-Tangerang 15314, Indonesia |
| Аффилиация | Masbah, Muljadi; Research Center for Physics, Indonesia Institute of Sciences, Serpong Puspiptek-Tangerang 15314, Indonesia |
| Аффилиация | Siregar, R T; Research Center for Physics, Indonesia Institute of Sciences, Serpong Puspiptek-Tangerang 15314, Indonesia |
| Аффилиация | Walyo, Tomi Budi; Research Center for Physics, Indonesia Institute of Sciences, Serpong Puspiptek-Tangerang 15314, Indonesia |
| Выпуск | 4 |
