Sl. Thomasson et Cm. Gould, DIRECT-COUPLED DC SQUID MAGNETOMETER FOR ULTRALOW TEMPERATURE NMR, Czechoslovak journal of Physics, 46, 1996, pp. 2849-2850
We have developed a 1 MHz bandwidth de SQUID magnetometer. By reconfig
uring the ground reference leads to the SQUID we increase the maximum
signal amplitude, and hence slew rate, by two orders of magnitude with
out altering any other system parameters.