论文标题
相反的Anvil型高压细胞的设计，用于精确磁力测定法及其在量子磁力方面的应用
Design of opposed-anvil-type high-pressure cell for precision magnetometry and its application to quantum magnetism
论文作者
论文摘要
我们已经开发了一种敏感的技术，可以在高达6.3〜GPA的超高压下进行磁力测定法，该技术可以检测到较小的弱体积敏感性至$ \ sim 10^{ - 4} $。在商用鱿鱼磁力计中，通过数值分析设计了相反的Anvil型高压电池，从而给出了几乎为零的磁反应。我们引入了通过考虑细胞部件的位移来从高压单元中减去背景贡献的程序，并找到了一种从给定的磁力计响应曲线中解析样品的微小磁性的方法。采用了一种非磁性材料，无粘合钨碳化陶瓷。为了进一步提高样品信号与背景的比率，引入了圆锥形的垫圈和cupped的砧座，产生了近十倍提高空间效率的十倍。新的设置和分析用于测量压力下旋转轨道纠缠矩的顺磁性敏感性。
We have developed a much sensitve technique to conduct magnetometry under ultrahigh pressures up to 6.3~GPa, which can detect a weak volume susceptibilities as small as $\sim 10^{-4}$. An opposed-anvil-type high-pressure cell is designed by numerical analysis to give nearly zero magnetic response, in a commercial SQUID magnetometer. We introduced procedures for subtracting background contributions from a high-pressure cell by taking displacements of the cell parts into account, and found a way of resolving tiny magnetism of a sample from given magnetometer response curves. A non-magnetic material, binderless tungsten carbide ceramic, is employed. To increase sample-signal-to-background ratio further, a conical shaped gasket and cupped anvils are introduced, yielding nearly ten times better space efficiency. The new set-up and analysis are applied to measure the paramagnetic susceptibilities of spin orbit entangled moment under pressures.
