Direct observation of dynamic magnetization reversal in magnetic nano-dots using spin-polarized STM
| Project/Area Number |
26790004
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| Research Category |
Grant-in-Aid for Young Scientists (B)
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| Allocation Type | Multi-year Fund |
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| Research Field |
Nanostructural physics
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| Research Institution | The University of Tokyo |
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Principal Investigator |
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| Project Period (FY) |
2014-04-01 – 2016-03-31
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| Project Status |
Completed (Fiscal Year 2015)
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| Budget Amount *help |
¥4,030,000 (Direct Cost: ¥3,100,000、Indirect Cost: ¥930,000)
Fiscal Year 2015: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
Fiscal Year 2014: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
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| Keywords | 走査トンネル顕微鏡 / 放射光 / ナノ構造 / 窒化鉄 / 放射光分光 / ナノ磁性体 / X線磁気円二色性 |
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| Outline of Final Research Achievements |
The purpose of the work is to establish the fabrication method of high-quality ferromagnetic iron nitride nano-dots, and to control their electronic and magnetic properties. We have investigated structural properties of nano-dots by scanning tunneling microscopy (STM) and found that the strict control of the annealing temperature is crucial to fabricate defect free nano-dots on the atomic scale. X-ray adsorption spectroscopy/X-ray magnetic circular dichroism (XAS/XMCD) measurements have been performed to study electronic and magnetic properties of nano-dots. We have revealed that the magnetic moments and magnetic anisotropy of nano-dots, which are important to understand the magnetization dynamics, strongly rely on the density of the atomic defects. Furthermore, we have shown that the above magnetic properties of nano-dots can be tuned by the magnetic coupling with magnetic materials.
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Report
(3 results)
Research Products
(32 results)
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[Presentation] 鉄窒化物数原子層膜の磁性および電子状態2016
Author(s)
高橋文雄, 宮町俊生, Antonov Victor, 高木康多, 魚住まどか, 横山利彦, Ernst Arthur, 小森文夫
Organizer
日本物理学会第71回年次大会
Place of Presentation
東北学院大学（宮城県・仙台市）
Year and Date
2016-03-22
Related Report
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[Presentation] 鉄窒化物薄膜の構造と磁性2015
Author(s)
高橋文雄, 宮町俊生, 高木康多, 魚住まどか, 家永紘一郎, 河村紀一, Arthur Ernst, 横山利彦, 小森文夫
Organizer
日本物理学会2015年秋季大会
Place of Presentation
関西大学（大阪府・吹田市）
Year and Date
2015-09-19
Related Report
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[Presentation] Formation of hexagonal Fe-N atomic layer on Cu (001)2015
Author(s)
K. Ienaga, Y. Takahashi, N. Kawamura, M. Yamada, T. Miyamachi, and F. Komori
Organizer
The 31st European Conference on Surface Science (ECOSS-31)
Place of Presentation
Centre de Convencions Internacional de Barcelona (CCIB), Barcelona, Spain
Year and Date
2015-09-02
Related Report
Int'l Joint Research
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[Presentation] Inherent orbital-selective tunneling in a STM measurement2015
Author(s)
Y. Takahashi, K. Ienaga, N. Kawamura, T. Miyamachi, A. Ernst and F. Komori
Organizer
The 20th International Conference on Magnetism (ICM2015)
Place of Presentation
Palau de Congressos de Catalunya, Pl. Europa, L' Hospitalet del Llobregat, Barcelona, Spain
Year and Date
2015-07-10
Related Report
Int'l Joint Research
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