C.J. Anderson, M.B. Ketchen
IEEE Transactions on Magnetics
We present a new dc superconducting quantum interference device (SQUID) configured as a susceptometer for the study of the magnetic properties of small (<10 μm) particles and thin-film samples. The SQUID consists of two series pick-up loops wound in opposite sense over a hole in the groundplane and connected to remotely located tunnel junctions by low inductance transmission lines. An integrated field coil with provision for balance allows application of a magnetic field of 0-30 G to a sample positioned in either pick-up loop. For an applied field of 5 G the device having an intrinsic energy sensitivity of ∼25 h is able to resolve the superconducting transition of a 5-μm tin particle with a signal-to-noise ratio of ∼106.
C.J. Anderson, M.B. Ketchen
IEEE Transactions on Magnetics
A. Bryant, J. Brown, et al.
DRC 2001
N.J. Halas, W.J. Gallagher, et al.
IEEE Transactions on Magnetics
R.H. Koch, M.B. Ketchen, et al.
Applied Physics Letters