Micorstructural and magnetic characterisation of a new kind of magnetic hybrid materials

经典的磁杂化材料包含磁软或磁硬颗粒。因此，它们要么具有主动磁流变效应，要么通过磁性硬颗粒的预磁化而具有被动磁流变特性。在这个俄罗斯和德国工作组的研究网络中，我们通过在弹性体基质中混合磁性硬颗粒和磁性软颗粒来结合主动和被动磁流变特性。该网络的目的是在详细的微观理解的基础上合成相应的材料，为感官应用量身定制。因此，该网络分为六个项目，其中三个在发展中国家基金资助框架内申请的项目在本一揽子提案中概述。Borin工作组项目涉及磁性杂化材料的磁流变特性，Odenbach工作组项目通过FORC测量提供磁性颗粒间相互作用的微观结构表征和信息，Becker工作组项目使用磁性杂化材料设计具有可调灵敏度的新型机械传感器。与这三个项目同时进行的还有由该基金资助的俄罗斯工作组的三个项目。其中一个项目- Stepanov小组项目-涉及磁性混合材料的合成，从而为所有其他项目的样品制备提供基础。另外两个俄罗斯项目涉及磁性混合材料的理论描述，使用从微观尺度（即从磁性颗粒尺度的基础）扩展到宏观尺度（即宏观材料定律）的尺度跨越方法。对于这些项目，包应用程序中确定的材料属性既可以作为输入数据，也可以作为检查理论结果的基准。此外，材料定律为感官应用的设计提供了输入数据。总之，我们希望该项目能够提供磁性杂化材料微观结构变化与宏观性能之间关系的详细信息，从而使预测实现某些材料性能所需的变化成为可能。

Classic magnetic hybrid materials contain either magnetically soft or magnetically hard particles. Accordingly, they either have an active magnetorheological effect or are provided with passive magnetorheological properties through the premagnetisation of the magnetically hard particles. Within this research network of Russian and German working groups we combine active and passive magnetorheological properties by mixing magnetically hard and magnetic soft particles in an elastomeric matrix. The aim of the network is to synthesize corresponding materials on the basis of a detailed microscopic understanding, tailor-made for sensory applications. Accordingly, the network is divided into six projects, of which the three projects applied for within the framework of DFG funding are summarised in this package proposal. The Borin working group project deals with the magnetorheological characterization of magnetic hybrid materials, the Odenbach working group project provides microstructural characterization and information on the interparticle interaction of magnetic particles via FORC measurements, and the Becker working group project uses magnetic hybrid materials for the design of novel mechanical sensors with adjustable sensitivity. These three projects are accompanied by three projects of Russian working groups funded by the RFFI. One of these projects - the Stepanov group project - deals with the synthesis of magnetic hybrid materials and thus provides the basis for sample preparation for all other projects. The two other Russian projects are concerned with the theoretical description of magnetic hybrid materials, using a scale spanning approach that extends from the microscopic scale, i.e. from the base of the scale of magnetic particles, to the macroscopic scale, i.e. to macroscopic material laws. For these projects, the material properties determined in the package application serve both as input data and as a benchmark for checking the theoretical results. In addition, the material laws provide the input data for the design of the sensory applications. In sum, we expect the project to provide detailed information on the relationships between microstructural changes and macroscopic properties of the magnetic hybrid materials, which should make it possible to predict the changes necessary to achieve certain material properties.