2016 Fiscal Year Final Research Report
Growth of multiferroic superlattices using UV-assisted ALD
| Project/Area Number |
26600104
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| Research Category |
Grant-in-Aid for Challenging Exploratory Research
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| Allocation Type | Multi-year Fund |
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| Research Field |
Thin film/Surface and interfacial physical properties
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| Research Institution | Sophia University |
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Principal Investigator |
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| Project Period (FY) |
2014-04-01 – 2017-03-31
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| Keywords | 原子層堆積 / 強磁性 / 強誘電性 / 紫外光 / ペロフスカイト / 超格子 |
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| Outline of Final Research Achievements |
A goal of the present study is the fabrication of artificial superlattices based on Bi-base perovskite oxides to realize multiferroic materials above room temperature. The principal problems for it are two. One is that the superlattices are too thin to reveal spontaneous polarization large enough to be observed. The other is that they only have by far smaller magnetization than expected from the theory. To solve these problems, the method of UV-asshisted atomic layer deposition (UV-ALD) was developed. Using this method, the growth temperature of superlattices was greatly reduced and the magnetization at room temperature increased. It is likely that this method is useful for other matterial systems.
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| Free Research Field |
薄膜
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