R. Beach, T. Min, et al.
IEDM 2008
Measurements of the magnetic hysteresis of thin film dc SQUID magnetometers in applied magnetic fields up to 1 mT are reported herein. The hysteresis characteristic for the 77 K YBaCuO high Tc SQUIDS has a similar behavior to that of low Tc Nb thin film SQUIDs operating at 4.2 K. A quadratic dependence on the amplitude of the sweeping field was found in the high field limit.
R. Beach, T. Min, et al.
IEDM 2008
M.B. Ketchen, D.D. Awschalom, et al.
IEEE Transactions on Magnetics
H.K. Olsson, R.H. Koch, et al.
Physical Review Letters
R.H. Koch, J.R. Lloyd, et al.
Physical Review Letters