| アイテムタイプ |
itemtype_ver1(1) |
| 公開日 |
2025-05-15 |
| タイトル |
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タイトル |
Ca-induced phonon softening in BaTiO3 revealed by inelastic x-ray and neutron scattering |
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言語 |
en |
| 著者 |
Kimura, K
Tsutsui, S
Yamamoto, Y
Nakano, A
Kawamura, K
Kajimoto, R
Kamazawa, K
Martin, A
Webber, KG
Kakimoto, K
Hayashi, K
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| アクセス権 |
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アクセス権 |
open access |
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アクセス権URI |
http://purl.org/coar/access_right/c_abf2 |
| 権利 |
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権利情報 |
American Physical Society |
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言語 |
en |
| 内容記述 |
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内容記述タイプ |
Abstract |
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内容記述 |
We performed inelastic x-ray and neutron scattering (IXS and INS) experiments for (Ba,Ca)TiO3 single crystals to elucidate the effect of Ca doping on the atomic dynamics. Dispersion relations of transverse phonons in BaTiO3, (Ba0.9Ca0.1)TiO3, and (Ba0.8Ca0.2)TiO3 were determined. The 𝐴-site–O vibrational mode as well as the acoustic mode were observed both by IXS and INS, whereas the Ti–O soft mode was detected only by INS. It was found that the 𝐴-site–O vibration exhibits significant softening with increasing Ca concentration, while the Ti–O soft mode is almost unaffected by the Ca doping. This finding is discussed in comparison with the polarization hysteresis loops and piezoelectric coefficients of (Ba,Ca)TiO3. It is indicated that the softening of the 𝐴-site–O vibration contributes to the enhancement of the piezoelectricity of Ca-doped BaTiO3-based materials. |
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言語 |
en |
| 出版者 |
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出版者 |
American Physical Society |
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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resource |
http://purl.org/coar/resource_type/c_6501 |
|
タイプ |
journal article |
| 出版タイプ |
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出版タイプ |
VoR |
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出版タイプResource |
http://purl.org/coar/version/c_970fb48d4fbd8a85 |
| 関連情報 |
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|
関連タイプ |
isVersionOf |
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|
識別子タイプ |
DOI |
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関連識別子 |
https://doi.org/10.1103/PhysRevB.110.134314 |
| 収録物識別子 |
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収録物識別子タイプ |
PISSN |
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収録物識別子 |
2469-9950 |
| 書誌情報 |
en : PHYSICAL REVIEW B
巻 110,
号 13,
p. 134314,
発行日 2024-10-22
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PhysRevB110_134314.pdf (6.7 MB)
