用于微秒级超快脉冲磁场的紧凑型无损发生器
Compact nondestructive generator for microsecond-class ultrafast pulsed magnetic fields
- Institute for Solid State Physics, University of Tokyo（东京大学固体物理研究所）
- Department of Engineering Science, University of Electro-Communications（电气通信大学工程科学系）
- Research Center for Materials Nanoarchitechtonics, National Institute for Material Science（国立材料研究所材料纳米结构研究中心）
机构由 AI 辅助整理，请以论文原文为准。
AI总结：
该研究研发了一种采用市售先进超快功率器件的紧凑型无损脉冲磁场发生器，可产生约1 T、脉宽3.8 μs的微秒级超快脉冲磁场，并通过相关测量验证了其性能。
AI中文摘要：
脉冲磁场的扫速是探究物质中非平衡现象的关键因素。然而，无损产生超快脉冲磁场颇具挑战，原因在于传统脉冲磁场发生器因电感和电容较大而具有大时间常数，以及功率器件和系统自身的残余电感。我们研发了一种新型紧凑型脉冲磁场发生器，采用市售最先进的超快功率器件，可产生强度约1 T、脉宽为3.8 μs的超快脉冲磁场。我们展示了该新研发系统的性能，将实验测得的磁场波形与简单电路模拟的结果进行对比，还利用该系统演示了钴粉末的磁化测量以及CdS单晶的法拉第旋转测量。
英文摘要：
The sweep rate of pulsed magnetic fields is a key factor in exploring of nonequilibrium phenomena in matter. However, the nondestructive generation of ultrafast pulsed magnetic fields is challenging because of the large time constants associated with the large inductance and capacitance of conventional pulsed magnetic field generators, as well as the residual inductance of the power devices and the system itself. We have developed a new compact pulsed magnetic field generator using commercially available state-of-the-art ultrafast power devices, enabling the generation of ultrafast pulsed magnetic fields up to approximately 1 T with a pulse duration of 3.8 $μ$s. We present the performance of the newly developed system and compare the experimentally obtained magnetic field waveforms with the results of a simple circuit simulation. In addition, we demonstrate magnetization measurements on cobalt powder and Faraday rotation measurements on CdS single crystal using the developed system.
