Alireza Patricia Lebre, Lonzarich Gilbert George
Quantum Matter Group, Cavendish Laboratory, Department of Physics, University of Cambridge, J. J. Thompson Ave., Cambridge CB3 0HE, United Kingdom.
Rev Sci Instrum. 2009 Feb;80(2):023906. doi: 10.1063/1.3077303.
We describe a miniature diamond anvil cell that can be used in a commercial superconducting quantum interference device (SQUID) magnetometer to detect magnetic and superconducting transitions at applied pressures above 100 kbar. The cell is of simple design but constructed out of ultralow susceptibility materials that allow us to detect changes in the magnetic moment of the specimen at the full sensitivity of the SQUID magnetometer (typically 10(-7) emu). We present examples of the use of the cell to detect ferromagnetic, antiferromagnetic, and superconducting transitions at pressures and temperatures in the range of 0<or=P<or=100 kbar, 1.8 K<or=T<or=290 K, respectively.
我们描述了一种微型金刚石对顶砧压腔，它可用于商业超导量子干涉器件（SQUID）磁力计，以检测在高于100千巴的外加压力下的磁性和超导转变。该压腔设计简单，但由超低磁化率材料制成，这使我们能够在SQUID磁力计的全灵敏度（通常为10^(-7) 电磁单位）下检测样品磁矩的变化。我们给出了该压腔在压力范围为0≤P≤100千巴、温度范围为1.8 K≤T≤290 K时用于检测铁磁、反铁磁和超导转变的示例。
