Ghosh Shreenanda, Brückner Felix, Nikitin Artem, Grinenko Vadim, Elender Matthias, Mackenzie Andrew P, Luetkens Hubertus, Klauss Hans-Henning, Hicks Clifford W
Institute for Solid State and Materials Physics, Technical University of Dresden, D-01069 Dresden, Germany.
Laboratory for Muon Spin Spectroscopy, Paul Scherrer Institute, CH-5232 Villigen, Switzerland.
Rev Sci Instrum. 2020 Oct 1;91(10):103902. doi: 10.1063/5.0025307.
We present a piezoelectric-driven uniaxial pressure cell that is optimized for muon spin relaxation and neutron scattering experiments and that is operable over a wide temperature range including cryogenic temperatures. To accommodate the large samples required for these measurement techniques, the cell is designed to generate forces up to ∼1000 N. To minimize the background signal, the space around the sample is kept as open as possible. We demonstrate here that by mounting plate-like samples with epoxy, a uniaxial stress exceeding 1 GPa can be achieved in an active volume of at least 5 mm. We show that for practical operation, it is important to monitor both the force and displacement applied to the sample. In addition, because time is critical during facility experiments, samples are mounted in detachable holders that can be rapidly exchanged. The piezoelectric actuators are likewise contained in an exchangeable cartridge.
我们展示了一种压电驱动的单轴压力传感器，该传感器针对μ子自旋弛豫和中子散射实验进行了优化，并且可在包括低温温度在内的宽温度范围内运行。为了适应这些测量技术所需的大尺寸样品，该压力传感器设计用于产生高达约1000 N的力。为了最小化背景信号，样品周围的空间尽可能保持开放。我们在此证明，通过用环氧树脂安装板状样品，在至少5 mm的有效体积中可以实现超过1 GPa的单轴应力。我们表明，对于实际操作，监测施加到样品上的力和位移非常重要。此外，由于在设施实验期间时间至关重要，样品安装在可拆卸的支架中，可以快速更换。压电致动器同样包含在可更换的盒中。
