Piezoelectric-based uniaxial pressure cell with integrated force and displacement sensors
Piezoelectric-based uniaxial pressure cell with integrated force and displacement sensors
复制标题
DOI：
10.1063/1.5075485
复制
发表时间：
2019-02-01
影响因子：
1.6
通讯作者：
Hicks, Clifford W.
中科院分区：
文献类型：
--
作者：
Barber, Mark E.;Steppke, Alexander;Hicks, Clifford W.
我们提出了一种设计的压电驱动的单轴应力单元适用于在环境温度和低温下使用，并结合了位移和力传感器。该单元直径46 mm，高13 mm，可施加最大约45 μ m的零载荷位移和最大约245 N的零位移力。通过对施加到样品的位移和力的组合知识，可以快速确定样品及其支架是否保持在其弹性极限内。在对氧化物金属Sr2RuO4的测试中，我们发现，在室温下，样品在类似于0.2 GPa的单轴应力下发生严重的塑性变形，而在5 K下，样品变形保持弹性高达近2 GPa。这一结果突出了原位调整的有用性，其中可以在将样品冷却至低温温度后施加力。由AIP Publishing授权出版。
We present a design for a piezoelectric-driven uniaxial stress cell suitable for use at ambient and cryogenic temperatures and that incorporates both a displacement and a force sensor. The cell has a diameter of 46 mm and a height of 13 mm. It can apply a zero-load displacement of up to similar to 45 mu m and a zero-displacement force of up to similar to 245 N. With combined knowledge of the displacement and force applied to the sample, it can quickly be determined whether the sample and its mounts remain within their elastic limits. In tests on the oxide metal Sr2RuO4, we found that at room temperature serious plastic deformation of the sample onset at a uniaxial stress of similar to 0.2 GPa, while at 5 K the sample deformation remained elastic up to almost 2 GPa. This result highlights the usefulness of in situ tuning, in which the force can be applied after cooling samples to cryogenic temperatures. Published under license by AIP Publishing.