High-Tc electronic planar gradiometer constructed from magnetometers on a chip

Kuen Lin Chen*, Jau Han Chen, Chuan Chin Lin, Chiu Hsien Wu, Ji Cheng Chen, Herng Er Horng, Hong Chang Yang

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review


We have fabricated a high-Tc electronic planar gradiometer composed of dc SQUIDs on a 10 mm × 10 mm SrTiO3 bicrystal substrate. The SQUIDs were patterned in a single-layer YBa2Cu 3O7-δ thin film which is prepared by pulsed laser deposition. The outputs of the magnetometers are added and subtracted by analog electronic circuits to form the gradiometer. These magnetometers could be used to construct two sets electronic planar first-order gradiometers or an electronic planar second-order gradiometer, which could measure the elements ∂Bz/∂x and ∂Bz/∂y or ∂2Bz/∂x∂y, respectively. The noise spectra of each magnetometer and a first-order electronic planar gradiometer were measured.

Original languageEnglish
Pages (from-to)805-808
Number of pages4
JournalIEEE Transactions on Applied Superconductivity
Issue number2 PART I
Publication statusPublished - 2005 Jun


  • Gradiometer
  • Magnetometer

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Electrical and Electronic Engineering


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