TY - JOUR AU - Ishigaki, K. AU - Gouchi, J. AU - Nagasaki, S. AU - Cheng, J. G. AU - Uwatoko, Y. PY - 2019/08/12 Y2 - 2024/03/29 TI - Development of two-stage multi-anvil apparatus for low-temperature measurements JF - Papers in Physics JA - Pap. Phys. VL - 11 IS - SE - Articles DO - 10.4279/pip.110006 UR - https://www.papersinphysics.org/papersinphysics/article/view/485 SP - 110006 AB - <p>The two-stage 6-8 multi-anvil (MA8) apparatus is an important large-volume, high-pressure technique that has been widely used in the high pressure mineralogy and material synthesis, mainly at room temperature or above. Recently, we have successfully developed a two-stage MA8 apparatus for low-temperature physical property measurements. The first-stage anvils at top and bottom sides are fabricated as a single piece in order to reduce the total size of the cylindrical module, which is put in a top-loading high pressure cryostat and compressed by a 1000 ton hydraulic press. A castable, split octahedral gasket with integrated fin was specifically designed in order to introduce the electrical leads from the inside sample container filled with a liquid pressure transmitting medium. By using tungsten carbide (WC) second-stage cubes with a truncated edge length of 3 mm and an octahedral gasket with an edge length of 6 mm, we have successfully generated pressure over 20 GPa at room temperature. Since the high pressure limit can be pushed to nearly 100 GPa by using the sintered diamond second-stage cubes, our MA8 apparatus has a great potential to expand the current pressure capacity for precise low-temperature measurements with a large sample volume.</p><p><strong>Edited by:</strong> A. Goñi, A. Cantarero, J. S. Reparaz</p> ER -