| Project/Area Number |
18K04248
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Multi-year Fund |
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| Section | 一般 |
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| Review Section |
Basic Section 21050:Electric and electronic materials-related
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| Research Institution | National Institute for Materials Science |
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Principal Investigator |
CHEN Jun 国立研究開発法人物質・材料研究機構, 機能性材料研究拠点, 主任研究員 (90537739)
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| Project Period (FY) |
2018-04-01 – 2021-03-31
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| Project Status |
Completed (Fiscal Year 2020)
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| Budget Amount *help |
¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2020: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2019: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2018: ¥2,990,000 (Direct Cost: ¥2,300,000、Indirect Cost: ¥690,000)
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| Keywords | カソードルミネッセンス / チタン酸ストロンチウム / 転位 / 酸素空孔 / SrTiO3 / Oxygen vacancy / Cathodoluminescence / Dislocation / cathodoluminescence / oxygen vacancy / Oxygen vacancies / Oxygen |
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| Outline of Final Research Achievements |
Strontium titanate (SrTiO3) as a typical perovskite oxide has attracted many attentions in the application for resistive random access memory. Oxygen vacancies are the major defects in SrTiO3, and play an important role in the resistive switching. On another hand, the resistance switching is sometimes ascribed to the interaction between dislocations and oxygen vacancies.In this work, we applied cathodoluminescence (CL) to study the oxygen vacancies and dislocations in SrTiO3. The influence of dislocations on Vo distribution and diffusion is visualized by CL mapping. The correlation between resistive switching, Vo and dislocations is clarified.
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| Academic Significance and Societal Importance of the Research Achievements |
本研究は、カソードルミネッセンス法によって、初めてチタン酸ストロンチウム（SrTiO3）中の転位と酸素空孔の空間分布に関する情報を得た。
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