| Project/Area Number |
11694067
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| Research Category |
Grant-in-Aid for Scientific Research (B).
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
固体物性Ⅱ(磁性・金属・低温)
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| Research Institution | Japan Advanced Institute of Science and Technology |
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Principal Investigator |
HORI Hidenobu Japan Advanced Institute of Science and Technology Professor, 材料科学研究科, 教授 (20028244)
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| Co-Investigator(Kenkyū-buntansha) |
FURUSAWA Masahiro Japan Advanced Institute of Science and Technology Associate Professor, 材料科学研究科, 客員助教授 (00251976)
YAMADA Syoji Japan Advanced Institute of Science and Technology Associate Professor, 材料科学研究科, 助教授 (00262593)
BEAUVILLAIN Pierre Japan Advanced Institute of Science and Technology Associate Professor
BARTENLIAN Bernard Japan Advanced Institute of Science and Technology Associate Professor
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| Project Period (FY) |
1999 – 2000
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| Project Status |
Completed (Fiscal Year 2000)
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| Budget Amount *help |
¥5,100,000 (Direct Cost: ¥5,100,000)
Fiscal Year 2000: ¥2,500,000 (Direct Cost: ¥2,500,000)
Fiscal Year 1999: ¥2,600,000 (Direct Cost: ¥2,600,000)
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| Keywords | GaAs / Ni / MBE / nanoparticles / magnetism / magnetic polarization / magnetoresistance / magneto-optic effect / Pd / Au / 磁化 / 磁区 |
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| Research Abstract |
The nano-size structure materials has been investigated with Prof.P.Beauvillain in Orsay Univ. One of the main subject is the magnetization in nan-size particles of noble metal family. The noble meals of Au, Pd and Pt are nonmagnetic in bulk states. Beauvillain's group is good at optical and X-ray spectroscopy(XPS)measurements. Moreover, they can make in situ observation by use of ultra-high vacuum chamber. Our group mainly made samples of nano-particle and Ni/GaAs composite and performed the magnetic measurements. As the result of our collaboration, it can be concluded that the spin polarization mechanism in nano-size particles are quite different from usual mechanism of 3d-transition metals. Magneto-optical measurement and ESR of many stripes on a GaAs substrate shows two ESR branches. This means existence of two sublattice structures. We might consider it to be a kind of artificial AF-or Ferrimagnetic structure. These results are widely discussed on various point of views at the workshop in Spain organized by Beaucvillain and our group.
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