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The magnetomodulation differential weak magnetic-field sensor, based on the
Bi-2223 high-temperature superconducting ceramics has been investigated. The high
magnetic-field resolution (~20 pT) and wide measurement range (125 - 140 dB) have been
obtained. The possibility of using this sensor for noninvasive control of magnetic particles or
implanted medical electronic devices in biological objects at a distance of up to 30 mm from the
skin surface is discussed.
Keywords: high-temperature superconducting ceramic; magnetic-field sensor; magnetic-field resolution; noninvasive control; medical implants. |
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