A Faraday Magnetometer for Studies of Monolayer 3He Films on Graphite

No Heading A Faraday-type magnetometer has been developed to measure the nuclear magnetization of monolayer ³He films adsorbed on Grafoil at temperatures down to 0.1 mK under high magnetic fields up to 10 T. The magnetic force is measured capacitively by monitoring the displacement of a wire-suspended copper plate. A double gradient coil system is employed to produce opposite field gradients at two regions the same distance apart from the center. At each region, exfoliated and non-exfoliated graphite foils are put one by one to eliminate a large background signal from Grafoil and copper.PACS numbers: 67.70.+n, 75.10.Jm