2000 Fiscal Year Final Research Report Summary
Fabrication and magnetic properties of new antiferromagnetic/ferromagnetic multilayers containing NiMn alloys
| Project/Area Number |
11650684
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Physical properties of metals
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| Research Institution | Yamaguchi University |
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Principal Investigator |
NAKAYAMA Noriaki Yamaguchi University, Faculty of Engineering, Associate Professor, 工学部, 助教授 (00164369)
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| Project Period (FY) |
1999 – 2000
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| Keywords | Thin Films / Superlattice / Magnetic Materials / Vacuum Evaporation / X-ray diffraction / Antiferromagnetic alloy / Exchange Anisotropy / Interlayer magnetic coupling |
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| Research Abstract |
We have investigated Ni-Mn and NiMn/Co multilayered films to develop the new antiferromagnetic-ferromagnetic superlattice films containing NiMn alloy layers. By depositing the Ni/Mn multilayers on the Au(111) textured films, high quality textured Ni/Mn superlatttices are obtained. Based on their structural and magnetic characterizations, it was found that antiferromagnetic Ni-Mn alloy thin films can be obtained by depositing "mono-layer" thick Ni and Mn. Also by changing the ratio of the deposition thicknesses in the "mono-layer" range, it is possible to prepare fcc alloy films in the whole concentration range of Ni-Mn system. Furthermore, we could fabricate NiMn/Co and NiMn/Ni superlattice films counposed of ferromagnetic Co (or Ni) and Ni-Mn alloy layers prepared by the above method. The crystallographic coherence length in the growth direction is fairly long. Magnetically, NiMn/Co superlatttices prepared in this study show somewhat different properties from those prepared by the conventional sputtering method.
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