Fabrication of Ferrite Nanodots by using Self-Assembled Nanostructural Underlayer and Their Application to Ultrahigh Density Magnetic Recording Media
| Project/Area Number |
23760280
|
|---|
| Research Category |
Grant-in-Aid for Young Scientists (B)
|
| Allocation Type | Multi-year Fund |
|---|
| Research Field |
Electronic materials/Electric materials
|
|---|
| Research Institution | Shinshu University |
|---|
Principal Investigator |
|
|---|
| Project Period (FY) |
2011 – 2012
|
| Project Status |
Completed (Fiscal Year 2012)
|
| Budget Amount *help |
¥4,810,000 (Direct Cost: ¥3,700,000、Indirect Cost: ¥1,110,000)
Fiscal Year 2012: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2011: ¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
|
|---|
| Keywords | 電気 / 電子材料(半導体、誘電体、磁性体、超誘電体、有機物、絶縁体、超伝導体など) / 磁気記録材料 / 情報ストレージ / フェライト / ナノドット / 自己組織化 / 超高密度磁気記録媒体 |
|---|
| Research Abstract |
The fabrication of ferrite nanodots was studied without the use of conventional lithographic techniques and patterning masks. Self-assembled Au nanodots were formed via sputtering and used as the underlayer for the ferrite film. Subsequently, hexagonal ferrite, SrFe_12O_19, was sputtered on the Au nanodots, resulting in an SrFe_12O_19/Au sample. Self-assembled SrFe_12O_19nanodots were obtained. The morphology of the Au nanodot underlayer acted as a template for the SrFe_12O_19 film, such that the self-assembled SrFe_12O_19 nanodots were formed. In addition, the fabrication of the SrFe_12O_19film on the Au nanodots induced the down-sizing ofthe magnetic domain structures of SrFe_12O_19 to the nanoscale. Importantly, although the nanodots showed nanometric magnetic domains, a sufficient magnetization magnitude in the SrFe_12O_19nanodots was revealed.
|
Report
(3 results)
Research Products
(19 results)
