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No.3(pp.67-109)

Home > Issues > Volume 3 (1998) > No.3(pp.67-109)

Characteristics of HTS SQUID-based Susceptometer

Journal of Magnetics, Volume 3, Number 3, 30 Sep 1998, Pages 82-85

V. P. Timofeev(Department of Physics, Sun Moon University, Inst. for Low Temp. Phys. & Eng., Nat'l Academy of Sciences of Ukraine), C.G. Kim(Department of Physics, Sun Moon University), V. I. Shnyrkov(Inst. for Low Temp. Phys. & Eng., Nat'l Academy of Sciences of Ukraine)

Abstract

A portable HTS RF SQUID-based system, weighing less than 20 kg has been built for susceptometry applications in weak magnetic fields, It includes a YBCO sensor for measuring the axial magnetic field component with a resolution of about 7×10^-13T/Hz^1/2. This is determined by the intrinsic magnetic noise in the quasi-white noise region. There is a relaxation for a sudden increase in field due to magnetic flux creep in HTS. In this instance the time did not exceed 3~5 minutes.

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