论文标题
一种用于测量低温下抗铁磁磁性和弱的磁性材料的超低场鱿鱼磁力计
An ultra-low field SQUID magnetometer for measuring antiferromagnetic and weakly remanent magnetic materials at low temperatures
论文作者
论文摘要
提出了用于测量某些抗铁磁铁外部磁场的新型设置，通常提出了较弱的磁性材料。该设置具有高度敏感的超级导电量子干扰装置（Squid）磁力计，磁场分辨率约为。 10英尺，温度范围为1.5-65 K的样品空间的非电动热化，具有非电动样品运动驱动器和光学位置编码。为了最大程度地减少磁敏感性效应，设置组件在样品接近度中脱气并用塑料材料实现。在磁性屏蔽的房间中运行设置，可以使一个定义明确的超低磁性背景场原位低于150 nt。该设置可以研究固有的弱磁性材料，这些磁性材料无法通过高场敏感性设置，光学方法或中子散射技术来测量，从而为例如研究提供了新的机会。旋转多种体质，天际材料和旋转冰。
A novel setup for the measurement of magnetic fields external to certain antiferromagnets and generally weakly remanent magnetic materials is presented. The setup features a highly sensitive Super Conducting Quantum Interference Device (SQUID) magnetometer with a magnetic field resolution of approx. 10 fT, non-electric thermalization of the sample space for a temperature range of 1.5 - 65 K with a non-electric sample movement drive and optical position encoding. To minimize magnetic susceptibility effects, the setup components are degaussed and realized with plastic materials in sample proximity. Running the setup in magnetically shielded rooms allows for a well-defined ultra low magnetic background field well below 150 nT in situ. The setup enables studies of inherently weak magnetic materials which cannot be measured with high field susceptibility setups, optical methods or neutron scattering techniques, giving new opportunities for the research on e.g. spin-spiral multiferroics, skyrmion materials and spin ices.
