Development of High Temperature Physical Property Measurement System for Probing Spin and Charge-Functionalized Thin-Film Materials

将开发一种物理性质测量系统，用于表征高温下的输运和复阻抗性质。这种仪器的主要功能是通过对输运和电磁响应的温度和磁场依赖的测量来阐明新型自旋和电荷功能材料的磁、电子和热学性质。拟议的系统将包括“微加热器压板”技术，以提供更大的温度范围。该仪器的功能将包括交流磁化率、直流磁化、I-V、霍尔测量、在4至700 K温度范围内高达7特斯拉的磁场中的热导率和复阻抗，加上材料和器件方面的平行努力，该仪器将成为教育学生和研究生有关这些材料的输运和电磁响应的工具。在许多情况下，自旋/电荷功能延伸到远高于室温。根据这一提议开发的仪器将使人们能够在广泛的温度范围内探测新型自旋和电荷功能材料的磁性、电子和热学性质。与材料和设备方面的平行努力一起，它将成为教育学生和研究生关于这些材料的运输和电磁响应的工具。

A physical properties measurement system for characterizing transport and complex impedance properties at elevated temperatures will be developed. The primary function of this instrumentation is to elucidate the magnetic, electronic, and thermal properties of novel spin- and charge-functional materials through temperature and magnetic field-dependent measurements of transport and electromagnetic response. The proposed system will include a "micro-heater platen" technology to provide for the extended temperature range. Capabilities of the instrumentation will include AC susceptibility, dc magnetization, I-V, Hall measurements, thermal conductivity, and complex impedance in magnetic fields up to 7 Tesla over a temperature range of 4 to 700 K. Together with parallel efforts in materials and devices, this instrumentation will serve as a vehicle to educate students and post-graduates regarding transport and electromagnetic response in these materialsIn recent years, there has emerged a significant interest in the understanding and manipulation of charge and spin in a variety of electronic materials. In many cases, the spin/charge functionality extends well above room temperature. The instrumentation developed under this proposal will enable the magnetic, electronic, and thermal properties of novel spin- and charge-functional materials to be probed through an extensive temperature range. Together with parallel efforts in materials and devices, it will serve as a vehicle to educate students and post-graduates regarding transport and electromagnetic response in these materials.