The Design of New Magnetic Materials

新型磁性材料的设计

• 批准号: 9521594
• 负责人: Paul Lahti
• 金额: $ 26.88万
• 依托单位: University of Massachusetts Amherst
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1995
• 资助国家: 美国
• 起止时间: 1995-08-01 至 1999-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9521594&HistoricalAwards=false
• 关键词: Design; New; Magnetic; Materials

This award is made by the Office of Special Projects in the Chemistry Division. In this research program Lahti will investigate model organic molecules bearing unpaired electrons in order to understand how to design new materials with advanced magnetic properties. Structural and molecular interaction features which favor the production of high-spin interactions between electrons in bulk systems will be identified, leading to ferromagnetic domains which could be used in new magnetic media. In addition, polymeric polyradical systems having large numbers of unpaired spins will be designed and synthesized, and their magnetic properties will be investigated. These fundamental structural and mechanistic investigations are directed towards developing rules to describe magnetic interactions both within and between molecules which may permit the design of a new generation of bulk organic ferromagnets. Although practically useful materials have not yet been realized, recent progress holds much promise for synthesizing them in the future.

该奖项由化学司特别项目办公室颁发。在这个研究项目中，拉赫蒂将研究带有未配对电子的模型有机分子，以了解如何设计具有先进磁性的新材料。结构和分子相互作用的特点，有利于产生高自旋相互作用的电子在体系统将被确定，导致铁磁域，可用于新的磁性介质。此外，还将设计和合成具有大量不成对自旋的聚合多自由基体系，并对其磁性能进行研究。这些基本的结构和机制研究旨在发展描述分子内部和分子之间磁相互作用的规则，这可能允许设计新一代块状有机铁磁体。虽然实际有用的材料尚未实现，但最近的进展为将来合成它们带来了很大的希望。