書誌事項
- タイトル別名
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- Current Researches of Relaxors -Steps from Quantum Paraelectrics to Relaxors-
- サイエンス記事 リラクサー研究の最近の動向--量子常誘電体からリラクサーへの道
- サイエンス キジ リラクサー ケンキュウ ノ サイキン ノ ドウコウ リョウシ ジョウ ユウデンタイ カラ リラクサー エ ノ ミチ
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<p>Current topics of relaxor studies are summarized with focusing on the quantum relaxor KTaO3 doped with Li, which bears all the characteristics of the prototype relaxor; (1) dielectric response described by the Vogel-Fulcher law, (2) history dependence of the order parameter, (3) slow development of the order parameter after an extremely long incubation time, and (4) nucleation and growth of the polar nano-region in non-polar matrix. In addition, the tri-critical point that separates the first and second order phase transitions is located in the vicinity of the line of critical end points, which enhances the dielectric response of the system. This kind of critical behavior is originated from the complex competition between a long-range Coulomb interaction, a short-range dipolar interaction, a quantum fluctuation (zero-point vibration) and a random field. This phenomenon is promising for the future trend of functional material quests.</p>
収録刊行物
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- 波紋
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波紋 19 (2), 95-100, 2009
日本中性子科学会
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詳細情報 詳細情報について
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- CRID
- 1390001205390914944
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- NII論文ID
- 130006701948
- 40016653065
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- NII書誌ID
- AA11905115
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- ISSN
- 1884636X
- 1349046X
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- NDL書誌ID
- 10285079
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- 本文言語コード
- ja
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- データソース種別
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- JaLC
- NDL
- Crossref
- CiNii Articles
- KAKEN
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- 抄録ライセンスフラグ
- 使用不可