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.

该项目是针对传感器应用的新型Fe-Pd-X铁磁磁性形状记忆合金（FMSMA）薄膜的合作方案的一部分。在过去的10年中，FMSMA作为致动器材料由于其大的磁致应变而受到关注。传感器的应用没有被追求。然而，这些都是非常有吸引力的，形成了这个proposal.The提案的主题描述了使用FMSMA薄膜/聚合物复合材料作为机械传感器，是唯一适合于聚合物中存在的大应变。FMSMA作为磁致伸缩元件在复合磁电磁场传感器中同样具有广阔的应用前景。由于这些复合材料的机械阻抗必须匹配，它们的开发将另外受益于FePd FSMA的低弹性常数。Fe-Pd基材料的第三个优点是与Ni-Mn-Ga相比具有更高的阻挡应力。通过其大的磁致伸缩应变，特别是相对于磁场的大应变导数/，机械和磁传感器的性能都将得到增强，从而产生大的灵敏度。这两个特性相结合，导致两个传感器的动态范围非常宽。