SQUID magnetometer

凝聚相样品的高灵敏度磁化学测量是生物无机化学、材料化学、催化以及固体物理和自旋电子学中最重要的测量方法之一。因此，在美因茨的约翰尼斯·古滕贝格大学的化学、生物化学和物理研究领域，经常进行大量的磁测量。在化学方面，研究了单分子磁性、自旋交叉、(光)催化等领域的电流和技术相关现象。在固态化学和物理学中，研究领域包括固态结构中的磁序以及数据存储和数据处理(自旋电子学)。由于这通常涉及磁矩非常低的样品，因此需要高灵敏度的测量。在JGU Mainz，AK教授Eva Rentschler使用SQUID磁强计(超导量子干涉装置)已有15年之久。由于年代久远，这种乐器现在极易出现故障。此外，更换部件的采购变得越来越困难，成本也越来越高。在某些情况下，必须开发自己的解决方案。该仪器的仪器服务已于2018年被制造商停止。因此，这项应用代表着对高度现代化、高性能的SQUID磁力仪的替代采购，这将确保美因茨工厂在未来几年进行富有成效的磁测量工作。该应用程序还考虑到样本量很大，而且由于现场新任命，计量能力的需要大大增加。因此，拟议的装置应配备必要的设备，以解决正在进行和计划中的研究项目和研究协会中的当前问题。

Highly sensitive magnetochemical measurements of condensed phase samples are one of the most important measurement methods in bioinorganic chemistry, materials chemistry, catalysis, as well as in solid state physics and spintronics. Therefore, a large number of magnetic measurements are routinely carried out in the research fields of chemistry, biochemistry and physics at the Johannes Gutenberg University Mainz. In chemistry, current and technologically relevant phenomena in the fields of single molecule magnetism, spin crossover, (photo-) catalysis are investigated. In solid-state chemistry and physics, studies are carried out in the field of magnetic order in solid-state structures as well as data storage and data processing (spintronics). Since this often involves samples with very low magnetic moments, measurements with high sensitivity are required. At JGU Mainz, a SQUID magnetometer (superconducting quantum interference device) has been operated by AK Prof. Eva Rentschler for 15 years. Due to its age, this instrument is now massively susceptible to faults. In addition, the procurement of replacement components is becoming increasingly difficult and cost-intensive. In some cases, self-made solutions had to be developed. The instrument service for the instrument was already discontinued by the manufacturer in 2018. Accordingly, this application represents a replacement procurement for a highly modern, high-performance SQUID magnetometer, which will ensure productive magnetometric work at the Mainz site for the coming years. The application also takes into account the very high sample volume and the significantly increased need for measuring capacity due to new appointments at the site. Accordingly, the proposed device should be equipped with the necessary equipment to address current questions in ongoing and planned research projects and research associations.