Eisterer M, Hengstberger F, Voutsinas C S, Hörhager N, Sorta S, Hecher J, Weber H W
Atominstitut, Vienna University of Technology, Stadionallee 2, 1020 Vienna, Austria.
Rev Sci Instrum. 2011 Jun;82(6):063902. doi: 10.1063/1.3600454.
We report on the design and implementation of a rotating sample magnetometer (RSM) operating in the variable temperature insert (VTI) of a cryostat equipped with a high-field magnet. The limited space and the cryogenic temperatures impose the most critical design parameters: the small bore size of the magnet requires a very compact pick-up coil system and the low temperatures demand a very careful design of the bearings. Despite these difficulties the RSM achieves excellent resolution at high magnetic field sweep rates, exceeding that of a typical vibrating sample magnetometer by about a factor of ten. In addition the gas-flow cryostat and the high-field superconducting magnet provide a temperature and magnetic field range unprecedented for this type of magnetometer.
