  We report on the development of an ultralow noise thin-film based SQUID
magnetometer. A niobium thin-film pickup coil is connected to the input coil of
a SQUID current sensor. The low capacitance of the used sub-micrometer
cross-type Josephson junctions enable superior noise performance of the device.
Application scenarios e.g. in geophysics and ultra-low field magnetic resonance
imaging are discussed.
