オーガノメタリックサンドイッチ・ランタニド・シングルイオン磁石で,異常な複数のリラックスメカニズムを持つ
Matthew Jeletic1, Po-Heng Lin, Jennifer J Le Roy
1Chemistry Department and the Centre for Catalysis Research and Innovation, University of Ottawa, 10 Marie Curie, Ottawa, ON, Canada K1N 6N5.
Journal of the American Chemical Society
|October 29, 2011
まとめ
新型ディスプロシウム (III) サンドウィッチ複合体が合成され,単離子磁石の動作が実証されました. その磁気リラックス経路は,応用された静的な連続電流フィールドに非常に依存する,異常な複数のモードを示した.
科学分野:
- 有機金属化学 有機金属化学
- マテリアルサイエンス 材料科学
- マグネチズム (磁気) とは
背景:
- シングルイオン磁石 (SIM) は,分子磁性材料の開発に不可欠です.
- ディスプロシウム (III) 複合体は,高い磁性アニソトロピーの可能性を秘めています.
- SIM のリラックスダイナミクスを制御することは,アプリケーションの鍵です.
研究 の 目的:
- 新型ディスプロシウム (III) サンドウィッチ複合体を合成し,特徴づけること.
- 磁気特性,特に単離磁石の振る舞いを調査するために.
- リラクゼーションのダイナミクスと,外部の磁場への依存を調査する.
主な方法:
- ディスプロシウム (III) サンドウィッチ複合体 [Dy (III) COT (COT) ] の合成 1,4-bis (Trimethylsilyl) サイクロオクタテトラエニルダイアニオン (COT (COT)) を用いて.
- 磁気感受性の測定. 磁気感受性の測定. 磁気感受性の測定. 磁気感受性の測定.
- 変化する静的な直流 (dc) フィールドの下でのリラックスダイナミクスの分析.
主要な成果:
- ディスプロシウム (III) サンドウィッチ複合体の合成が成功しました.
- 複合体は単離磁石の動作を示しています.
- 異常な複数の磁気リラクゼーションモードが観察されました.
- リラクゼーション経路は,適用された静的なDCフィールドに強く依存していることが判明しました.
結論:
- 合成されたディスプロシウム (III) 複合体は有望な単離子磁石である.
- 複合体は,外部フィールドの影響を受けた複雑なリラックスダイナミクスを示しています.
- ランタナイドSIMにおけるフィールド依存リラクゼーションに関するさらなる研究が必要である.
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