We report a scanning superconducting quantum interference device (SQUID) microsusceptometer with a spatial resolution of 8 μm, tested by measuring the susceptibility of individual 3 μm diam tin disks. Images of the disks agree well with numerical modeling based on the known geometry of the SQUID microsusceptometers. The low-field spin sensitivity between 1.5 and 6 K is while scanning.
REFERENCES
1.
M. B.
Ketchen
, D. D.
Awschalom
, W. J.
Gallagher
, A. W.
Kleinsasser
, R. L.
Sandstrom
, J. R.
Rozen
, and B.
Bumble
, IEEE Trans. Magn.
MAG-25
, 1212
(1989
).2.
3.
4.
L. R.
Narasimhan
, M.
Takigawa
, and M. B.
Ketchen
, Appl. Phys. Lett.
65
, 1305
(1994
).5.
6.
www.hypres.com
7.
8.
9.
L. D. Landau and E. M. Lifshitz, Electrodynamics of Continuous Media, 2nd ed. (Pergamon, Oxford, 1984), p. 185.
10.
V.
Chandrasekhar
, R. A.
Webb
, M. J.
Brady
, M. B.
Ketchen
, W. J.
Gallagher
, and A.
Kleinsasser
, Phys. Rev. Lett.
67
, 3578
(1991
).11.
B. A.
Scott
, J. R.
Kirtley
, D.
Walker
, B.-H.
Chen
, and Y.
Wang
, Nature (London)
389
, 164
(1997
).
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© 2001 American Institute of Physics.
2001
American Institute of Physics
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