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Elsevier, Physica C: Superconductivity and its Applications, (372-376), p. 217-220

DOI: 10.1016/s0921-4534(02)00674-3

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Sensitive HTS DC-SQUID gradiometers for magnetic evaluation applications

Journal article published in 2002 by M. I. Faley ORCID, U. Poppe, K. Urban, D. N. Paulson, T. N. Starr, R. L. Fagaly
This paper is available in a repository.
This paper is available in a repository.

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Abstract

An axial HTS DC-SQUID gradiometer formed by electronic subtraction with a 10 cm baseline and a gradient resolution better than 1 fT/cm at 77 K has been developed and demonstrated. The best achieved gradient resolution for the planar HTS DC-SQUID gradiometer was of about 30 fT/cm for both shielded and unshielded operation. A comparison of the characteristics of the gradiometers with ones of competitive room temperature sensors like fluxgates is discussed.