| アイテムタイプ |
学術雑誌論文 / Journal Article(1) |
| 公開日 |
2025-09-23 |
| タイトル |
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タイトル |
Strain gradient across the heteroepitaxial interface in a BaTiO3/KNbO3 core-shell nanocomposite particle revealed by synchrotron radiation X-ray diffraction |
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言語 |
en |
| 言語 |
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言語 |
eng |
| 資源タイプ |
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資源タイプ識別子 |
http://purl.org/coar/resource_type/c_6501 |
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資源タイプ |
journal article |
| 著者 |
Ryo Furukawa
Sangwook Kim
Mingyang Shao
Ohwada Kenji
Oshime Norihiro
Gopal Prasad Khanal
Ichiro Fujii
Shintaro Ueno
Satoshi Wada
Shinya Tsukada
Yoshihiro Kuroiwa
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| 抄録 |
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内容記述タイプ |
Abstract |
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内容記述 |
We synthesized BaTiO₃–KNbO₃ (BT–KN) core–shell nanocomposite particles, where a KN shell epitaxially grows on BT nanoparticles to form a KN shell around a BT core. To investigate the relationship between interfacial lattice strain and dielectric properties, we prepared BT nanoparticles with a reduced grain size of 80 nm and analyzed their structural features using synchrotron radiation X-ray diffraction over a wide temperature range (300–800 K). Multi-component Rietveld refinement revealed that more than half of the particle volume exhibits lattice distortion, forming an extended structure gradient region (SGR) induced by the heteroepitaxial interface. The SGR volume fraction was largest at 300 K, where the tetragonal BT core is in contact with an orthorhombic KN shell. These results demonstrate that reducing the core size significantly enhances the spatial extent of SGRs, offering a promising strategy to tailor dielectric properties through nanoscale interface engineering. |
| 書誌情報 |
Japanese Journal of Applied Physics
巻 64,
p. 08SP10,
発行日 2025-09
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| DOI |
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識別子タイプ |
DOI |
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関連識別子 |
10.35848/1347-4065/adf3bf |
