Tateiwa Naoyuki, Haga Yoshinori, Matsuda Tatsuma D, Fisk Zachary, Ikeda Shugo, Kobayashi Hisao
Advanced Science Research Center, Japan Atomic Energy Agency, Tokai, Naka, Ibaraki, Japan.
Rev Sci Instrum. 2013 Apr;84(4):046105. doi: 10.1063/1.4802832.
Two modifications have been made to a miniature ceramic anvil high pressure cell (mCAC) designed for magnetic measurements at pressures up to 12.6 GPa in a commercial superconducting quantum interference (SQUID) magnetometer [N. Tateiwa et al., Rev. Sci. Instrum. 82, 053906 (2011); ibid. 83, 053906 (2012)]. Replacing the Cu-Be piston in the former mCAC with a composite piston composed of the Cu-Be and ceramic cylinders reduces the background magnetization significantly smaller at low temperatures, enabling more precise magnetic measurements at low temperatures. A second modification to the mCAC is the utilization of a ceramic anvil with a hollow in the center of the culet surface. High pressures up to 5 GPa were generated with the "cupped ceramic anvil" with the culet size of 1.0 mm.
对一个微型陶瓷砧高压腔（mCAC）进行了两项改进，该高压腔设计用于在商用超导量子干涉（SQUID）磁力计中进行高达12.6 GPa压力下的磁性测量 [N. Tateiwa等人，《科学仪器评论》82, 053906 (2011); 同上，83, 053906 (2012)]。用由铜铍和陶瓷圆柱体组成的复合活塞取代原mCAC中的铜铍活塞，可显著降低低温下的背景磁化强度，从而能够在低温下进行更精确的磁性测量。对mCAC的第二项改进是使用在压砧表面中心有空心的陶瓷砧。使用压砧尺寸为1.0 mm的“杯状陶瓷砧”产生了高达5 GPa的高压。
