Study on the interaction between different kinds of transition-metal elements incorporated in semiconductors and creation of novel magnetic semiconductors
| Project/Area Number |
24656005
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| Research Category |
Grant-in-Aid for Challenging Exploratory Research
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| Allocation Type | Single-year Grants |
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| Research Field |
Applied materials science/Crystal engineering
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| Research Institution | University of Tsukuba |
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Principal Investigator |
KURODA Shinji 筑波大学, 数理物質系, 教授 (40221949)
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| Project Period (FY) |
2012-04-01 – 2014-03-31
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| Project Status |
Completed (Fiscal Year 2013)
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| Budget Amount *help |
¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2013: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
Fiscal Year 2012: ¥2,340,000 (Direct Cost: ¥1,800,000、Indirect Cost: ¥540,000)
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| Keywords | スピントロニクス / 磁性半導体 / 4元系混晶 / 反強磁性 / スピン偏極電子源 / 強磁性半導体 / 4元混晶半導体 |
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| Research Abstract |
We have investigated the magnetic properties of quaternary mixed crystals in which two kinds of transition-metal elements are incorporated in II-VI compounds, with an aim to clarify the interaction between different kinds of transition-metal elements and to seek the possibility of novel magnetism. In the case of (Cd,Mn,Cr)Te, it is found that the interaction between Mn, which is antiferromagnetic in the ternary compound (Cd,Mn)Te, turns to ferromagnetic by the incorporation of a small amount of Cr. This result indicates that the ferromagnetism is enhanced by incorporating Mn and Cr simultaneously in the crystals. On the other hand, in the case of (Zn,Cr,Fe)Te, it is found that the saturation magnetization decreases and the coercive force increases with the increase of the Fe composition at a constant Cr composition, which suggests the antiferromagnetic interaction between Cr and Fe.
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Report
(3 results)
Research Products
(57 results)
