Giant Magneto-Impedance Effect in Paramagnetic Asphaltene Coated Amorphous Ribbons

Peksoz A., Taysioglu A. A., Derebasi N.

SENSOR LETTERS, vol.11, no.1, pp.161-163, 2013 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 11 Issue: 1
  • Publication Date: 2013
  • Doi Number: 10.1166/sl.2013.2816
  • Journal Name: SENSOR LETTERS
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.161-163
  • Bursa Uludag University Affiliated: Yes


Paramagnetic asphaltene on the surface of the Co-rich amorphous ribbon (Fe5.85Co70.15Mo4B15Si5) samples, 13 mm in length and 5 mm in width, was grown in order to improve the GM! response. GMI response was measured over a frequency range of 0.1 to 3.5 MHz and under a static magnetic field. The asphaltene coating process leads to the increase of GMI effect more than 4.8 times compared to the uncoated sample at 2.0 MHz. To our knowledge, such a GMI enhancement is reported for the first time by asphaltene coating process. It is believed that such an increase in GMI response will be important in practice due to their applications in electronic devices-specially, magnetic field sensors and future magnetic recording heads. The results are compared with other studies.