Synthesis and Characterization of Low Dimensional Magnetic and Conductive Systems

低维磁性和导电系统的合成和表征

• 批准号: 8803382
• 负责人: Roger Willett
• 金额: --
• 依托单位: Washington State University
• 依托单位国家: 美国
• 项目类别: Continuing grant
• 财政年份: 1988
• 资助国家: 美国
• 起止时间: 1988-08-01 至 1992-01-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=8803382&HistoricalAwards=false
• 关键词: Synthesis; Characterization; Low; Dimensional; Magnetic

The structural and electronic factors which determine magnetic behavior in insulating solids are to be investigated. The emphasis will be on those factors which influence the magnetic anisotropy in these materials. The use of electron paramagnetic resonance (EPR) as well as magnetization and magnetic susceptibility studies to probe magnetic anisotropies in copper (II) halides will be stressed. The delineation of magneto- structural correlations will be used as basis to obtain a wide variety of low dimensional systems. included will be S=1 chains to test the Haldane conjecture, ferromagnetic chains with potential as non-conducting magnets, and layer-perovskite systems. In addition, a set a mixed valence chains with potential as one dimensional conductors will be investigated.

决定绝缘固体磁性的结构和电子因素将被研究。重点将放在影响这些材料的磁各向异性的因素上。使用电子顺磁共振（EPR）以及磁化和磁化率的研究，以探测卤化铜（II）的磁各向异性将强调。磁-结构相关性的描绘将被用作获得各种各样的低维系统的基础。将包括S=1链来测试Haldom猜想，具有作为非导电磁体的潜力的铁磁链，以及层钙钛矿系统。此外，我们还研究了一组具有一维导体势的混合价链。