Fe-Pd-X Thin Film-Polymer Composites for Sensor Applications - Development of new miniaturized sensors using composites of ferromagnetic shape memory thin films and polymers

用于传感器应用的 Fe-Pd-X 薄膜聚合物复合材料 - 使用铁磁形状记忆薄膜和聚合物复合材料开发新型微型传感器

• 批准号: 28258416
• 负责人: Professor Dr.-Ing. Eckhard Quandt
• 金额: --
• 依托单位: Lehrstuhl für Anorganische Funktionsmaterialien
• 依托单位国家: 德国
• 项目类别: Priority Programmes
• 财政年份: 2006
• 资助国家: 德国
• 起止时间: 2005-12-31 至 2012-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/28258416?language=en
• 关键词: Fe; Pd; Thin; Film; Polymer

This project is part of a collaboration package proposal aiming at new Fe-Pd-X ferromagnetic magnetic shape memory alloy (FMSMA) thin films for sensor applications. In the past 10 years FMSMAs received attention as actuator materials on account of their large magnetically induced strains. Sensor applications were not pursued. However, those are very attractive and form the subject of this proposal.The proposal describes the use of FMSMA thin film/polymer composites as mechanical sensors that are uniquely suited for the large strains present in polymers. FMSMAs are equally promising as the magnetostrictive component in composite magnetoelectric magnetic field sensors. Since the mechanical impedance of these composites must be matched their development will additionally benefit from the low elastic constants of FePd FSMAs. A third advantage of Fe-Pd based materials is their higher blocking stress in comparison to Ni-Mn-Ga.The performance of both mechanical and magnetic sensors will be enhanced through their large magnetostrictive strains, ¿, and especially the large strain derivative with respect to the magnetic field, ¿¿/¿¿ that gives rise to a large sensitivity. In combination these two characteristics result in a very wide dynamic range for both sensors.

该项目是针对新的FE-PD-X铁磁形状记忆合金（FMSMA）薄膜的合作包提案的一部分，用于传感器应用。在过去的10年中，由于磁性诱导的大量菌株，FMSMas作为执行材料受到了关注。没有追求传感器应用。但是，这些非常有吸引力，并构成了该提议的主题。该提案描述了使用FMSMA薄膜/聚合物复合材料作为机械传感器，这些传感器非常适合聚合物中存在的大型菌株。 FMSMAS与复合磁场传感器中的磁成分一样有前途。由于必须与这些组合物的机械阻抗相匹配，因此它们的发育将受益于FEPD FSMA的低弹性常数。与Ni-MN-GA相比，基于Fe-PD的材料的第三个优势是它们的较高阻塞应力。机械传感器和磁性传感器的性能将通过其大型磁性菌株（尤其是相对于磁场）的大磁性衍生物增强，这会引起较大的灵敏度。结合使用这两个特征，两个传感器的动态范围非常广。