Giriat Gaétan, Wang Weiwei, Attfield J Paul, Huxley Andrew D, Kamenev Konstantin V
Centre for Science at Extreme Conditions and School of Engineering, University of Edinburgh, Edinburgh EH9 3JZ, United Kingdom.
Rev Sci Instrum. 2010 Jul;81(7):073905. doi: 10.1063/1.3465311.
We have developed a miniature diamond anvil cell for magnetization measurements in a widely used magnetic property measurement system commercial magnetometer built around a superconducting quantum interference device. The design of the pressure cell is based on the turnbuckle principle in which force can be created and maintained by rotating the body of the device while restricting the counterthreaded end-nuts to translational movement. The load on the opposed diamond anvils and the sample between them is generated using a hydraulic press. The load is then locked by rotating the body of the cell with respect to the end-nuts. The dimensions of the pressure cell have been optimized by use of finite element analysis. The cell is approximately a cylinder 7 mm long and 7 mm in diameter and weighs only 1.5 g. Due to its small size the cell thermalizes rapidly. It is capable of achieving pressures in excess of 10 GPa while allowing measurements to be performed with the maximum sensitivity of the magnetometer. The performance of the pressure cell is illustrated by a high pressure magnetic study of Mn(3)Cr(CN)(6) x xH(2)O Prussian blue analog up to 10.3 GPa.
我们开发了一种微型金刚石对顶砧池，用于在一种广泛使用的基于超导量子干涉装置构建的商用磁强计的磁性测量系统中进行磁化测量。压力池的设计基于螺丝扣原理，即通过旋转装置主体来产生并维持力，同时限制反向螺纹端螺母的平移运动。使用液压机在相对的金刚石砧和它们之间的样品上施加负载。然后通过相对于端螺母旋转池体来锁定负载。通过有限元分析对压力池的尺寸进行了优化。该池近似为一个长7毫米、直径7毫米的圆柱体，重量仅为1.5克。由于其尺寸小，该池热平衡迅速。它能够实现超过10吉帕的压力，同时允许以磁强计的最大灵敏度进行测量。通过对高达10.3吉帕的Mn(3)Cr(CN)(6)·xH(2)O普鲁士蓝类似物进行高压磁性研究，展示了压力池的性能。
