TY  - CONF
AU  - Faley, M.I.
AU  - Poppe, U.
AU  - Dunin-Borkowski, R.E
AU  - Schiek, M.
AU  - Boers, F.
AU  - Chocholacs, H.
AU  - Dammers, J.
AU  - Eich, E.
AU  - Shah, N.
AU  - Ermakov, A.
AU  - Slobodchikov, V.
AU  - Maslennikov, Y.
AU  - Koshelets, V.
TI  - High-Tc DC SQUIDs for magnetoencephalography
CY  - New York, NY
PB  - IEEE
M1  - FZJ-2012-00802
PY  - 2012
AB  - We have investigated the microstructural and electron transport properties of 45° step-edge Josephson junctions grown on MgO substrates and used them for the preparation of superconducting quantum interference device (SQUID) magnetometers intended for magnetoencephalography (MEG) measurement systems. The high-Tc SQUID magnetometers also incorporate 16 mm multilayer superconducting flux transformers on the MgO substrates and demonstrate a magnetic field resolution of ~ 4 fT/√Hz at 77 K. Results are illustrated for the detection of auditory evoked magnetic responses of the human cortex and compared between high-Tc SQUIDs and a commercial low-Tc MEG system. Our results demonstrate that MEG systems can be upgraded using high-Tc SQUIDs to make them independent of helium and more user-friendly, saving operating costs and leading to the widespread utilization of MEG systems in clinical practice and at universities.
T2  - The Applied Superconductivity Conference
CY  - 7 Oct 2012 - 12 Oct 2012, Portland (Oregon)
Y2  - 7 Oct 2012 - 12 Oct 2012
M2  - Portland, Oregon
LB  - PUB:(DE-HGF)8
UR  - https://juser.fz-juelich.de/record/127851
ER  -