Development and application of extremely sensitive local magnetic sensor by using ballistic transport properties
Project/Area Number |
25870548
|
Research Category |
Grant-in-Aid for Young Scientists (B)
|
Allocation Type | Multi-year Fund |
Research Field |
Nanostructural physics
Applied materials
|
Research Institution | Kumamoto University |
Principal Investigator |
HARA Masahiro 熊本大学, 大学院先端科学研究部(理), 准教授 (50392080)
|
Project Period (FY) |
2013-04-01 – 2016-03-31
|
Project Status |
Completed (Fiscal Year 2016)
|
Budget Amount *help |
¥4,030,000 (Direct Cost: ¥3,100,000、Indirect Cost: ¥930,000)
Fiscal Year 2016: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000)
Fiscal Year 2015: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000)
Fiscal Year 2014: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000)
Fiscal Year 2013: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
|
Keywords | バリスティック伝導 / 二次元電子系 / グラフェン / 微小磁性体 / ナノシート / XMCD / 磁気センサー / 酸化チタン / バリステッィク伝導 |
Outline of Final Research Achievements |
We have demonstrated a highly sensitive detection of magnetic states in the edge of a rectangular ferromagnet by measuring a bend resistance of a ballistic two-dimensional gas. A semiclassical simulation revels that the sensitivity increases when the geometry of the sensor and the spatial distribution of the local field are optimized. We have successfully observed a magnetization process in a ferromagnetic dot with the size of 100 nm. We have also investigated the magnetic behaviors of chemically exfoliated Mn-doped titania nanosheets by X-ray magnetic circular dichroism. Mn atoms in the single-layer nanosheets showed a weak ferromagnetic order. We clearly observed an anti-ferromagnetic coupling between Fe overlayers and the Mn-doped nanosheets.
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Report
(4 results)
Research Products
(11 results)