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One-dimensional AGMI sensor with Co66Fe4Si15B15 ribbon as sensing element

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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.

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Authors and Affiliations

  1. Department of Materials Science and Engineering, Chungnam National University, Daejeon, 305-764, South Korea

    P. Kollu & C.G. Kim

  2. ReCAMM, Chungnam National University, Daejeon, 305-764, South Korea

    L. Jin & K.W. Kim

  3. Department of Physics, Andong National University, Andong, 760-749, South Korea

    S.S. Yoon

Authors
  1. P. Kollu
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  2. L. Jin
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  3. K.W. Kim
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  4. S.S. Yoon
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  5. C.G. Kim
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Correspondence to C.G. Kim.

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PACS

85.75.Ss; 85.70.Ay; 85.70.-w; 85.75.-d; 75.30.Gw; 75.50.Kj; 75.90.+w

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Kollu, P., Jin, L., Kim, K. et al. One-dimensional AGMI sensor with Co66Fe4Si15B15 ribbon as sensing element. Appl. Phys. A 90, 533–536 (2008). https://doi.org/10.1007/s00339-007-4317-x

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  • DOI: https://doi.org/10.1007/s00339-007-4317-x

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