• DocumentCode
    2496723
  • Title

    Single-core Giant Magnetoimpedance with AC Bias

  • Author

    Malátek, Michal ; Ripka, Pavel

  • Author_Institution
    Czech Tech. Univ. in Prague, Prague
  • fYear
    2006
  • fDate
    22-25 Oct. 2006
  • Firstpage
    1012
  • Lastpage
    1015
  • Abstract
    Enormous improvement of the temperature stability of simple giant magnetoimpedance (GMI) sensor has been reached by means of AC bias of the sensor. Despite of reduction of the frequency range of the sensor to less than 50 Hz, the 100 Hz-current flowing through the bias coil improves the temperature offset stability by the factor of 19; from 1053 nT/K to 54 nT/K (sinewave excitation current of 10 mARMS was used). The offset drift was furthermore reduced to less than 16 nT/K by increasing the amplitude of the excitation current to 24 mARMS.
  • Keywords
    giant magnetoresistance; magnetic sensors; magnetoresistive devices; AC bias; bias coil; excitation current; frequency 100 Hz; giant magnetoimpedance sensor; offset drift; single-core giant magnetoimpedance; temperature offset stability; Amorphous magnetic materials; Coils; Conductors; Impedance; Magnetic cores; Magnetic field measurement; Magnetic sensors; Radio frequency; Stability; Temperature sensors;
  • fLanguage
    English
  • Publisher
    ieee
  • Conference_Titel
    Sensors, 2006. 5th IEEE Conference on
  • Conference_Location
    Daegu
  • ISSN
    1930-0395
  • Print_ISBN
    1-4244-0375-8
  • Electronic_ISBN
    1930-0395
  • Type

    conf

  • DOI
    10.1109/ICSENS.2007.355796
  • Filename
    4178791
    • Link To Document
    https://search.isc.ac/dl/search/defaultta.aspx?DTC=49&DC=2496723