Proposal to Purchase a SQUID magnetometer

购买 SQUID 磁力计的提案

• 批准号: 0234886
• 负责人: Larry Taylor
• 金额: $ 16.01万
• 依托单位: Virginia Polytechnic Institute and State University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2003
• 资助国家: 美国
• 起止时间: 2003-03-01 至 2006-02-28
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0234886&HistoricalAwards=false
• 关键词: Proposal; Purchase; SQUID; magnetometer

With this award from the Chemistry Research Instrumentation and Facilities (CRIF) Program, the Department of Chemistry at Virginia Polytechnic Institute and State University will acquire a Superconducting Quantum Interface Device (SQUID) magnetometer. This equipment will enable researchers to carry out studies on a) synthesis and characterization of molecule-based magnets; b) magnetic targeting of drugs in vivo; c) development of ferromagnetic, ferroelectric and ferroelastic materials; d) properties of alkyl-substituted metallocenes and indacenes; and e) the synthesis of stable and persistent organic radicals that are capable of chelating transition metals. A SQUID magnetometer is critical for studying the magnetic properties of materials, particularly for weakly magnetic/small moment samples. In a DC magnetization measurement, one measures the magnetic moment as a function of applied DC magnetic field (and/or temperature). Using DC magnetization experiments, one can determine magnetic moments or a hysteresis curve, or identify magnetic phase transitions. In such a fashion, complete magnetic characterization of single crystal samples and films is possible. These types of measurements are essential in order to understand polymers and thin films.

通过化学研究工具和设施（CRIF）计划的奖项，弗吉尼亚理工学院和州立大学的化学系将获得超导量子界面设备（SQUID）磁力计。该设备将使研究人员能够对A）基于分子的磁体的合成和表征进行研究； b）药物在体内的磁靶靶； c）开发铁电磁，铁电和铁弹性材料； d）烷基取代的金属元素和吲哚烯的特性； e）能够螯合过渡金属的稳定和持续有机自由基的合成。鱿鱼磁力计对于研究材料的磁性特性至关重要，尤其是对于弱磁/小矩样品。在DC磁化测量中，一个人测量了磁矩与所施加的直流磁场（和/或温度）的函数。使用DC磁化实验，可以确定磁矩或磁滞曲线或识别磁相变。以这种方式，可以对单晶样品和膜进行完全的磁性表征。这些类型的测量对于了解聚合物和薄膜至关重要。