Use of a pendulum magnetometer for measuring the magnetic susceptibility of solids under pressure: The compound V4S9Br4

The construction and operating principle of a pendulum magnetometer for measuring the magnetic susceptibility of solids under high gas pressures are described. This device is distinctive in having the pendulum mounted directly in the high pressure chamber. Experimental plots of the susceptibility of the compound V4S9Br4 as a function of pressure up to 2 kbar at temperatures of 60-300K are presented as an example of the use of the magnetometer. (C) 2015 AIP Publishing LLC.