% IMPORTANT: The following is UTF-8 encoded.  This means that in the presence
% of non-ASCII characters, it will not work with BibTeX 0.99 or older.
% Instead, you should use an up-to-date BibTeX implementation like “bibtex8” or
% “biber”.

@ARTICLE{Zimmermann:47136,
      author       = {Zimmermann, E. and Verweerd, A. and Glaas, W. and Tillmann,
                      A. and Kemna, A.},
      title        = {{A}n {AMR} {S}ensor-based {M}easurement {S}ystem for
                      {M}agnetoelectrical {R}esistivity {T}omography},
      journal      = {IEEE sensors journal},
      volume       = {5},
      issn         = {1530-437X},
      address      = {New York, NY},
      publisher    = {IEEE},
      reportid     = {PreJuSER-47136},
      pages        = {233 - 241},
      year         = {2005},
      note         = {Record converted from VDB: 12.11.2012},
      abstract     = {A magnetoelectrical resistivity measurement system is
                      proposed, which combines measurement of the electric
                      potential and the magnetic field due to a current injection
                      into a sample. Measurement of the electric potential, as
                      well as the injected current, is similar to traditional
                      electrical resistivity tomography (ERT) data acquisition.
                      For the magnetic field measurements, 24 sensor modules have
                      been developed using three component anisotropic
                      magnetoresistive (AMR) sensors, mounted on a vertically
                      moving scanning torus. The system is designed to operate in
                      a typical laboratory magnetic noise environment without
                      extensive shielding. To compensate for the effects of the
                      Earth's magnetic field, the AMR sensors are operated with a
                      field feedback circuit. Optimal noise reduction is provided
                      by the use of a lock-in frequency of 25 Hz, with sine wave
                      modulation and measurement cycles of 10 s. The resolution of
                      the system is better then 50 pT and the aimed accuracy is
                      $0.1\%.$ The system provides a data set of magnetic fields
                      complimentary to traditional ERT to determine the internal
                      conductivity distribution of cylindrical samples with the
                      dimension of 0.1-m radius and 0.5-m height.},
      keywords     = {J (WoSType)},
      cin          = {ICG-IV / ZEL},
      ddc          = {620},
      cid          = {I:(DE-Juel1)VDB50 / I:(DE-Juel1)ZEL-20090406},
      pnm          = {Chemie und Dynamik der Geo-Biosphäre},
      pid          = {G:(DE-Juel1)FUEK257},
      shelfmark    = {Engineering, Electrical $\&$ Electronic / Instruments $\&$
                      Instrumentation / Physics, Applied},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:000227869800017},
      doi          = {10.1109/JSEN.2005.843889},
      url          = {https://juser.fz-juelich.de/record/47136},
}