| Project/Area Number |
25390052
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Multi-year Fund |
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| Section | 一般 |
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| Research Field |
Applied materials
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| Research Institution | Nagaoka University of Technology |
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Principal Investigator |
Uchitomi Naotaka 長岡技術科学大学, 工学(系)研究科(研究院), 教授 (20313562)
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| Co-Investigator(Renkei-kenkyūsha) |
TOYOTA HIDEYUKI 長岡技術科学大学, 工学部, 技術職員 (90467085)
JINBO YOSHIO 長岡技術科学大学, 工学部, 教務職員 (10134975)
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| Project Period (FY) |
2013-04-01 – 2016-03-31
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| Project Status |
Completed (Fiscal Year 2015)
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| Budget Amount *help |
¥5,200,000 (Direct Cost: ¥4,000,000、Indirect Cost: ¥1,200,000)
Fiscal Year 2015: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2014: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2013: ¥3,120,000 (Direct Cost: ¥2,400,000、Indirect Cost: ¥720,000)
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| Keywords | 磁性半導体 / 多元化合物 / 半導体スピントロ二クス |
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| Outline of Final Research Achievements |
Ferromagnetic semiconductors with two criteria such as room-temperature ferromagnetism and process compatibility with current semiconductor technology have been required for realizing spintronics devices. In order to realize the InP-based spin spintronic devices, we demonstrated the fabrication of the magnetic quantum nanostructures consisting of Al0.48In0.52As and ZnSnAs2:Mn, together with Al0.48In0.52As/ZnSnAs2 and Ga0.47In0.53As/ZnSnAs2 structures. These materials are lattice-matched to InP substrates. Atomic-scale Mn distributions in ferromagnetic ZnSnAs2:Mn thin films grown on InP substrates have been studied by applying three-dimensional atom probe (3DAP) microscopy. It is found that Mn atoms in cross-sectional 3DAP maps show the presence of inhomogeneities in Mn distribution. The high Mn concentration regions are expected to be coherently clustered MnAs in the zinc-blende structure, resulting in the formation of Mn-As random connecting patterns.
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