2014 Fiscal Year Final Research Report
Magnetism of cementite and the precipitation under magnetic field
Project/Area Number |
24560804
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Research Category |
Grant-in-Aid for Scientific Research (C)
|
Allocation Type | Multi-year Fund |
Section | 一般 |
Research Field |
Physical properties of metals
|
Research Institution | Osaka University |
Principal Investigator |
TERAI TOMOYUKI 大阪大学, 工学(系)研究科(研究院), 講師 (20346183)
|
Project Period (FY) |
2012-04-01 – 2015-03-31
|
Keywords | 結晶磁気異方性 / 軟磁性体 / セメンタイト / 鉄鋼材料 / 永久磁石 |
Outline of Final Research Achievements |
We investigated magnetism of cementite and tried controlling the precipitation of cementite from pure iron under magnetic field. As a result, we found that the easy axis is c axis of orthorhombic structure, the 2nd easy axis is b axis and a axis is hard axis. We also estimated the magnetocrystalline anisotropy energy at the temperature between 5 K and 350 K. Using these results, we tried controlling the precipitation of cementite from pure iron under magnetic field and found that the more variants of cementite which has low magnetocrystalline anisotropy energy precipitate than the other of 12 variants in BCC iron single crystal.
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Free Research Field |
磁性材料学
|