Studies in Spintronic Magnetism

方法电子制造工业和汽车用扭矩传感器，其工作原理是基于铁磁钢的磁弹性效应。这些是一种成功和有利可图的产品：然而，它们的竞争力将受益于一些领域的改进。具体地说，为了使它们在磁性噪声环境中更可靠地发挥作用，理想情况下，它们应该在单位应变下表现出更大的信号场。传感器磁化配置文件中的不一致性也存在一些杂散信号问题。该项目将结合使用X射线表征、磁测量、克尔显微镜、射频溅射、该项目与EPSRC的4个研究重点中的3个一致：1/21世纪产品：所讨论的扭矩传感器既智能又多功能。2/数字制造：扭矩传感器是采用数字处理的机械和电子系统(其中一些是人工智能系统)之间的前端接口。3/新工业系统：这些传感器的应用领域非常广泛，它们是新工业产品的基本前端组件：最近它们应用于新工业产品的最引人注目的例子是电动自行车。这样的新应用不断涌现。该项目符合EPSRC在其战略计划中表达的所有3项研究战略：1/平衡能力：该项目支持一家技术卓越的英国公司的研发能力2/建设领导力：该项目为未来的研究/行业领导者提供广泛而高质量的培训计划3/加速影响：该项目改进了处于商业开发前沿的产品-请参阅上面关于其在新工业产品中的适用性的评论

Methode Electronics make torque sensors for industrial and automotive application the operating principle of which is based on the magnetoelastic effect in ferromagnetic steels. These are a successful and lucrative product: however their competitiveness would benefit from improvements in a number of areas. Specifically, in order to allow them to function more reliably in magnetically noisy environments, they should ideally exhibit a larger signal field per unit strain. There are also some spurious signal issues attaching to nonuniformities in the sensor magnetisation profile. The project will address these various issues using a combination of X-ray characterisation, magnetometry, Kerr microscopy, radiofrequency sputtering, chemical implantation of selected rare earth impurities and micromagnetic modelling.The project aligns with 3 of EPSRC's 4 Research priorities:1/ 21st Century products: the torque sensors in question are both smart and multifunctional.2/ Digital manufacturing: the torque sensors are the front-end interface between mechanical and electronic systems that employ digital processing (some of which are Artifically Intelligent systems).3/ New Industrial Systems: the application area of these sensors is of enormous breadth and they are essential front-end components of new industrial products: the most compelling recent example of their application to a new industrial product is the e-bike. New applications like this are continually emerging.The project aligns with all 3 of EPSRC's Research Strategies as expressed in its Strategic Plan:1/ Balancing Capability: the project supports the R&D capability of an technologically excellent UK company2/ Building Leadership: the project provides a broad and high quality training programme for a future leader of research/Industry3/ Accelerating Impact: the project improves a product that is at the cutting edge of commercial exploitation - see comments above about its applicability in new industrial products