  We present a micron-sized induction magnetometer designed to measure the
magnetic response of superconducting mesoscopic samples. The device is
manufactured using the Memscap PolyMUMPs process and consists of two octagonal
planar parallel micro-coils covering an area of 240 microns X 240 microns,
which are separated by only 2.75 microns. We show that this design is
sufficiently sensitive to detect the Meissner transition at zero dc field, of a
high-Tc superconductor Bi2Sr2CaCu2O8 disk of 40 microns in diameter and 1
micron in thicknesses.
