SQUID magnetometer

SQUID磁力计

• 批准号: 423442764
• 金额: --
• 依托单位: Georg-August-Universität Göttingen
• 依托单位国家: 德国
• 项目类别: Major Research Instrumentation
• 财政年份: 2019
• 资助国家: 德国
• 起止时间: 2018-12-31 至 无数据
• 项目状态: 未结题
• 来源: https://gepris.dfg.de/gepris/projekt/423442764?language=en
• 关键词: SQUID; magnetometer

Magnetometry of both solid and liquid substances is among the most important research methods in the chemistry of open-shell metal complexes, bioinorganic coordination chemistry, and solid-state and material physics. Consequently, in numerous research projects of the applicants, viz. a group of chemists and physicists from Göttingen, magnetic measurements are routinely carried out, often on very air- and moisture-sensitive samples. In the field of molecular chemistry, the electronic structures of metal complexes that determine their reactivity and properties can be elucidated, and special magnetic phenomena such as single-molecule magnetism or spin-crossover can be analyzed. Planned research projects in solid state physics focus on the unique electronic and magnetic properties of thin oxide perovskite layers and heterostructures, as well as on their application potential. The existing SQUID magnetometer, which has been operated jointly by the Institute of Inorganic Chemistry (Meyer group) and the I. Physics Institute for 15 years, is now susceptible to failure. In addition, as the manufacturing of this type of device ceased in 2013, the procurement of replacement components is becoming increasingly difficult and costly. The modern SQUID magnetometer requested here is therefore considered as a replacement. It also accounts for the significant increase in sample numbers and the growing demand for high-precision measurements, since magneto-chemical aspects are now being investigated in a much larger number of research groups in the Institute of Inorganic Chemistry. Therefore, the requested device should be provided with the necessary additional equipment – e.g., with a pressure cell, a glass fiber sample holder and light source, and the AC susceptibility measurements option – to address specific questions from current and planned research projects.

固体和液体物质的磁性测量是开壳金属配合物化学、生物无机配位化学、固体和材料物理学中最重要的研究方法之一。因此，在申请人的许多研究项目中，即来自哥廷根的一组化学家和物理学家，经常对空气和水分非常敏感的样品进行常规的磁性测量。在分子化学领域，可以阐明决定其反应性和性质的金属配合物的电子结构，并可以分析特殊的磁性现象，如单分子磁性或自旋交叉。固态物理学的计划研究项目集中在薄氧化物钙钛矿层和异质结构的独特电子和磁性，以及它们的应用潜力。现有的SQUID磁力仪是由无机化学研究所（迈耶小组）和国际原子能机构（I.I.）联合运行的。物理研究所15年，现在容易失败。此外，由于这类装置的制造已于2013年停止，采购替换部件变得越来越困难和昂贵。因此，此处要求的现代SQUID磁强计被视为替代品。这也说明了样品数量的显著增加和对高精度测量的日益增长的需求，因为无机化学研究所的大量研究小组正在研究磁化学方面。因此，所要求的器械应配备必要的附加设备-例如，配备压力传感器、玻璃纤维样品保持器和光源，以及交流磁化率测量选项-以解决当前和计划中的研究项目中的特定问题。