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- 島川 祐一
- 京都大学化学研究所
書誌事項
- タイトル別名
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- Novel Functional Oxide Materials
- 受賞記念講演:第61回研究功績賞(2022年度) 新規機能性酸化物材料の創製
- ジュショウ キネン コウエン:ダイ61カイ ケンキュウ コウセキショウ(2022ネンド) シンキ キノウセイ サンカブツ ザイリョウ ノ ソウセイ
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説明
<p>Transition-metal oxides show lots of interesting and useful properties. The wide variety of their crystal structures gives rise to various electronic structures, which lead to various chemical and physical properties. The author has been interested in such transition-metal oxides and is seeking new materials with novel functional properties. In this review article new functional properties found in A-site-ordered quadruple perovskite structure oxides with the unusually high-valence cations are highlighted. Negative thermal expansion was found in NdCu3Fe4O12 at the intersite-charge-transfer transition temperature near room temperature. The property is useful for developing materials to compensate the normal positive thermal expansion. Significant latent heat was also found to be provided by the intersite-charge-transfer transition in NdCu3Fe4O12. The large latent heat is considered to be related with unusual first-order magnetic entropy change induced by the charge transition. The large entropy change can be utilized for thermal control through a caloric effect, which can make effective energy systems for thermal energy storage and refrigeration.</p>
収録刊行物
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- 粉体および粉末冶金
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粉体および粉末冶金 70 (11), 445-450, 2023-11-15
一般社団法人 粉体粉末冶金協会
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キーワード
詳細情報 詳細情報について
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- CRID
- 1390298134505348992
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- NII書誌ID
- AN00222724
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- ISSN
- 18809014
- 05328799
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- HANDLE
- 2433/286768
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- NDL書誌ID
- 033178596
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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
- IRDB
- NDL
- Crossref
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- 抄録ライセンスフラグ
- 使用不可