Sandberg L Ø, Haubro M L, Krighaar K M L, Edberg R, Fjellvåg I M B, Guthrie M, Holmes A T, Mangin-Thro L, Wildes A, Henelius P, Lefmann K, Deen P P
Niels Bohr Institute, University of Copenhagen, Universitetsparken 5, 2100 Copenhagen Ø, Denmark.
Department of Physics, Technical University of Denmark, 2800 Kongens Lyngby, Denmark.
Rev Sci Instrum. 2023 Oct 1;94(10). doi: 10.1063/5.0152136.
We provide an overview of a pressure cell designed to apply uniaxial pressure to single crystals for the study, by neutron scattering techniques, of strongly correlated magnetic systems and, in particular, quantum magnets. A detailed overview of the pressure cell components, their requirements, and links to the scientific and technical specifications are presented. The pressure cell is able to accommodate a 200 mm3 single crystal that can be pressurized up to 2 GPa at cryogenic temperatures. The pressure cell is consistent with the requirements of inelastic neutron scattering and, importantly, neutron polarization analysis. A particular strength of the uniaxial pressure cell is the highly uniform and low background for a wide scattering angle of 360° horizontally and ±20° vertically. We show the performance of the uniaxial pressure cell using a relevant neutron scattering instrument, the polarized diffuse scattering instrument, D7. The experiments confirm that the cell complies with the scientific and technical requirements. This uniaxial pressure cell will provide a useful additional tool in the sample environment suite available for the study of quantum magnetism.
我们概述了一种压力室，该压力室旨在对单晶施加单轴压力，以便通过中子散射技术研究强关联磁系统，特别是量子磁体。文中详细介绍了压力室的组件、其要求以及与科学技术规格的关联。该压力室能够容纳一个200立方毫米的单晶，在低温下可加压至2吉帕。该压力室符合非弹性中子散射的要求，重要的是，也符合中子极化分析的要求。单轴压力室的一个突出优点是，在水平360°和垂直±20°的宽散射角范围内具有高度均匀性和低本底。我们使用相关的中子散射仪器——极化漫散射仪D7展示了单轴压力室的性能。实验证实该压力室符合科学技术要求。这种单轴压力室将为可用于量子磁性研究的样品环境套件提供一个有用的附加工具。
