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Local Linear Coupling between Polarization and Strain in KF-substituted Barium Titanate Crystals Probed by Brillouin Scattering and Dielectric Properties
https://repo.qst.go.jp/records/80877
https://repo.qst.go.jp/records/80877b5aebf1c-14df-423c-b86d-fd4cac782dd8
| Item type | 学術雑誌論文 / Journal Article(1) | |||||
|---|---|---|---|---|---|---|
| 公開日 | 2020-07-14 | |||||
| タイトル | ||||||
| タイトル | Local Linear Coupling between Polarization and Strain in KF-substituted Barium Titanate Crystals Probed by Brillouin Scattering and Dielectric Properties | |||||
| 言語 | ||||||
| 言語 | eng | |||||
| 資源タイプ | ||||||
| 資源タイプ識別子 | http://purl.org/coar/resource_type/c_6501 | |||||
| 資源タイプ | journal article | |||||
| アクセス権 | ||||||
| アクセス権 | metadata only access | |||||
| アクセス権URI | http://purl.org/coar/access_right/c_14cb | |||||
| 著者 |
Tsukada, Shinya
× Tsukada, Shinya× 大和田, 謙二× Kojima, Seiji× Akishige , Yukikuni× Kenji, Ohwada |
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| 抄録 | ||||||
| 内容記述タイプ | Abstract | |||||
| 内容記述 | An elastic anomaly at the paraelectric–ferroelectric phase transition in BaTiO3-related materials is a known precursor phenomenon. However, in the paraelectric phase, this behavior is not expected from the average crystal structure and its origin is still controversial. In this study, to investigate the origin of the elastic anomaly, both elastic and dielectric experiments were performed on 10%KF-substituted BaTiO3, (Ba0.9K0.1)Ti(O2.9F0.1), in which the ferroelectric phase transition is closer to being second order than that in BaTiO3. Around the phase transition, both the elastic and dielectric properties demonstrated clear changes over a wide temperature range. Moreover, a linear correlation between elastic and dielectric properties was confirmed, indicating that the elastic anomaly can be interpreted based on local linear coupling between polarization and strain. This understanding of a phenomenon not expected in homogeneous centrosymmetric crystals is applicable to various perovskite-type ferroelectrics such as KNbO3- and Pb-based relaxor ferroelectrics. | |||||
| 書誌情報 |
Juornal of the Physical Society of Japan 巻 89, p. 124702, 発行日 2020-11 |
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| 出版者 | ||||||
| 出版者 | The Physical Society of Japan | |||||
| ISSN | ||||||
| 収録物識別子タイプ | ISSN | |||||
| 収録物識別子 | 0031-9015 | |||||
| DOI | ||||||
| 識別子タイプ | DOI | |||||
| 関連識別子 | 10.7566/JPSJ.89.124702 | |||||
| 関連サイト | ||||||
| 識別子タイプ | URI | |||||
| 関連識別子 | https://journals.jps.jp/doi/full/10.7566/JPSJ.89.124702 | |||||
