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- Title
One-dimensional AGMI sensor with Co<sub>66</sub>Fe<sub>4</sub>Si<sub>15</sub>B<sub>15</sub> ribbon as sensing element.
- Authors
Kollu, P.; Jin, L.; Kim, K. W.; Yoon, S. S.; Kim, C. G.
- Abstract
A novel asymmetric giant magneto impedance (AGMI) sensor was developed and the performance of the sensor was carefully studied. This one dimensional sensor can be further developed as a two-dimensional compass that can be used for navigational purposes. We used commercial Metglas 2714A ribbon. The sensor uses Co66Fe4Si15B15 ribbon as a sensing element. The results showed for high sensitivity and resolution. The GMI sensor consists of a crystal oscillator voltage to current converter for providing the current to the sample, a differential amplifier, successive amplifier stages, multiplier, and cascaded low-pass filters. The observed sensitivity was 25 V/Oe. Angle sensitivity was found to be 2 mV/degree. Our sensor showed excellent linearity when compared with previous sensors [13, 14]. These sensors require dc bias coils and two sensor elements to attain good linearity.
- Subjects
AUTOMOBILE ignition; DETECTORS; ALCOHOL ignition interlock devices; ENGINEERING instruments; PHYSICS instruments; CARBON monoxide detector manufacturing
- Publication
Applied Physics A: Materials Science & Processing, 2008, Vol 90, Issue 3, p533
- ISSN
0947-8396
- Publication type
Article
- DOI
10.1007/s00339-007-4317-x