| 发明名称 |
MAGNETIC RECORDING MEDIUM AND METHOD OF MANUFACTURING THE SAME |
| 摘要 |
The magnetic recording medium has a magnetic layer comprising ferromagnetic powder and binder on a nonmagnetic support, wherein the ferromagnetic powder is ferromagnetic hexagonal ferrite powder, and the ferromagnetic hexagonal ferrite powder has a crystallite volume as determined by X-ray diffraction analysis ranges from 1,000 nm3 to 2,400 nm3, and a ratio of the crystallite size Dx(107) obtained from a diffraction peak of a (107) plane to a particle size in a direction of an easy axis of magnetization DTEM as determined by observation with a transmission electron microscope, Dx(107)/DTEM, is greater than or equal to 1.1. |
| 申请公布号 |
US2017004856(A1) |
申请公布日期 |
2017.01.05 |
| 申请号 |
US201615197046 |
申请日期 |
2016.06.29 |
| 申请人 |
FUJIFILM Corporation |
发明人 |
TADA Toshio;SUGISHIMA Akinori;YAMASHITA Tatsuya;KASADA Norihito;OYANAGI Masahito |
| 分类号 |
G11B5/842;G11B5/706 |
主分类号 |
G11B5/842 |
| 代理机构 |
|
代理人 |
|
| 主权项 |
1. A magnetic recording medium,
which comprises a magnetic layer comprising ferromagnetic powder and binder on a nonmagnetic support, wherein the ferromagnetic powder is ferromagnetic hexagonal ferrite powder, and the ferromagnetic hexagonal ferrite powder has a crystallite volume as determined by X-ray diffraction analysis ranges from 1,000 nm3 to 2,400 nm3, and a ratio of the crystallite size Dx(107) obtained from a diffraction peak of a (107) plane to a particle size in a direction of an easy axis of magnetization DTEM as determined by observation with a transmission electron microscope, Dx(107)/DTEM, is greater than or equal to 1.1. |
| 地址 |
Tokyo JP |
