| 研究課題/領域番号 |
16F16371
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| 研究機関 | 国立研究開発法人物質・材料研究機構 |
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研究代表者 |
知京 豊裕 国立研究開発法人物質・材料研究機構, 国際ナノアーキテクトニクス研究拠点, グループリーダー、主任研究者 (10354333)
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| 研究分担者 |
MOHAMED MOHAMED 国立研究開発法人物質・材料研究機構, 国際ナノアーキテクトニクス研究拠点, 外国人特別研究員
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| 研究期間 (年度) |
2016-10-07 – 2019-03-31
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| キーワード | oxide / multi layer / sol-gel / BaTiO3 / SrTiO3 |
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| 研究実績の概要 |
Mesoporous metal oxide thin films can offer a good template for printing scalable strained inorganic crystals in the pores. We are the first report to use mesoporous materials for vertical strain engineering in nanostructured SrTiO3 (STO) and BaTiO3 (BTO) layers through an easy chemical method. The ferroelectric properties are improved in case of highly strained mesostructured STO/BTO composite thin films. This concept was further applied recently for the preparation of multilayered hybrid thin films composed of nanostructured STO and BTO layers. However the film did not show a smaller leak current. Therefore tin this year,we have developed multilayered hybrid thin films composed of nanostructured STO and BTO layers by a chemical sol-gel method which shows good dielectric properties and the highest Curie temperature (Tc) at around 280 °C compared to STO/BTO previously reported, which is promising for their potential application in electric capacitors at high temperatures.
We have managed the synthesis of various Prussian blue (PB) and PB analogues (PBAs) and employed them in synthesis of functional materials for energy-related applications. Additionally, we have co-authored many articles and one review convey the-state-of-the-art synthesis and thermal treatments of PB and PBAs.
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| 現在までの達成度 (区分) |
現在までの達成度 (区分)
1: 当初の計画以上に進展している
理由
We have already performed to show the first report to use mesoporous materials for vertical strain engineering in nanostructured SrTiO3 (STO) and BaTiO3 (BTO) layers through an easy chemical method last year and this year, to achieve more smaller leak current of BaTiO3/SrTiO3 layers, We have developed multilayered hybrid thin films composed of nanostructured STO and BTO layers by a chemical sol-gel method which shows good dielectric properties and the highest Curie temperature (Tc) at around 280 °C compared to STO/BTO previously reported, which is promising for their potential application in electric capacitors at high temperatures.
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| 今後の研究の推進方策 |
1) Developing more multiferroics (mixing ferroelectric materials with high-k materials
2) Engineering strains in various inorganic materials (e.g. transition metal oxides and composites) thin films for improving the dielectric properties.
3) Assembly of crystalline PB and PBAs thin films for PBA-based nanodevices to work efficiently at elevated temperatures.
4) Deriving various nanostructured inorganic materials and hybrids using PB, PBAs, and carbon materials for energy-related applications.e and magnetic materials.
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