| 发明名称 | Method of manufacturing hexagonal ferrite magnetic particles | ||
| 摘要 | The method of manufacturing hexagonal ferrite magnetic particles, which includes providing hexagonal ferrite magnetic particles by conducting calcination of particles comprising an alkaline earth metal salt and an iron salt to cause ferritization; and further includes causing a glass component to adhere to the particles and then conducting the calcination of the particles to form a calcined product in which hexagonal ferrite is detected as a principal component in X-ray diffraction analysis; and removing the glass component from a surface of the calcined product that has been formed. | ||
| 申请公布号 | US9382130(B2) | 申请公布日期 | 2016.07.05 |
| 申请号 | US201314040041 | 申请日期 | 2013.09.27 |
| 申请人 | FUJIFILM Corporation | 发明人 | Hattori Yasushi;Omura Kazufumi |
| 分类号 | C01G49/00;H01F1/01;G11B5/706;G11B5/842;B82Y30/00 | 主分类号 | C01G49/00 |
| 代理机构 | Sughrue Mion, PLLC | 代理人 | Sughrue Mion, PLLC |
| 主权项 | 1. A method of manufacturing hexagonal ferrite magnetic particles, which comprises: providing hexagonal ferrite magnetic particles by conducting calcination of particles comprising an alkaline earth metal salt and an iron salt to cause ferritization; and further comprises: causing a glass component to adhere to the particles by admixing a precursor of the glass component with a solution comprising the particles to cause the glass component, in the form of a hydrolysate of the precursor, to adhere to the particles, and then conducting the calcination of the particles to form a calcined product in which hexagonal ferrite is detected as a principal component in X-ray diffraction analysis; andremoving the glass component from a surface of the calcined product that has been formed, wherein the glass component is a hydrolysate of a silicon compound. | ||
| 地址 | Tokyo JP | ||