Closed cycle SQUID magnetometer

闭环SQUID磁力计

• 批准号: 439555515
• 金额: --
• 依托单位: Universität Bielefeld
• 依托单位国家: 德国
• 项目类别: Major Research Instrumentation
• 财政年份: 2020
• 资助国家: 德国
• 起止时间: 2019-12-31 至 无数据
• 项目状态: 未结题
• 来源: https://gepris.dfg.de/gepris/projekt/439555515?language=en
• 关键词: Closed; cycle; SQUID; magnetometer

Within the framework of three research groups and several projects (DFG, BMBF and EU), extensive work on magnetic materials in the form of thin films, nanoparticles and bulk will be carried out in the next few years. The focus is on their magnetic, electrical and thermal transport properties aiming at several applications: caloric effects, magnetic shape memory, nanoparticles for biomedical applications, giant and tunneling magneto resistive sensors, spincaloritronics, etc. For magnetic characterization, the working groups currently count only with a magnetometer designed for thin films, making measurements on larger samples difficult. Both the existing magnetometer and the transport properties measurement setups are overloaded. Therefore, it is extremely important that a new, highly sensitive magnetometer which is versatile enough to allow measurements in all the planned systems be added to our infrastructure. In particular, without this new magnetometer, the new group Magnetic Energy Materials cannot advance in its research since it deals chiefly with bulk samples. Moreover, the new requested system will allow for the characterization of magnetic and transport properties under the same conditions, a possibility that the research groups currently do not have and that will allow the connection between magnetic and transport phenomena.

在三个研究小组和几个项目（DFG，BMBF和EU）的框架内，将在未来几年内对薄膜，纳米颗粒和块状形式的磁性材料进行广泛的研究。重点是他们的磁，电和热输运特性，针对几个应用：热效应，磁形状记忆，纳米粒子的生物医学应用，巨大的和隧道磁阻传感器，spincaloritronics等的磁性表征，工作组目前只计数与磁强计设计的薄膜，使测量较大的样品困难。现有的磁力计和输运性质测量装置都超负荷。因此，在我们的基础设施中增加一个新的、高灵敏度的磁力计是非常重要的，它的用途广泛，足以允许在所有计划的系统中进行测量。特别是，如果没有这种新的磁力计，新的磁能材料组就无法在其研究中取得进展，因为它主要处理散装样品。此外，新要求的系统将允许在相同条件下表征磁性和输运性质，这是研究小组目前不具备的可能性，并将允许磁性和输运现象之间的联系。