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Highly-sensitive analog magnetometer based on a null-picovoltmeter

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Abstract

The principle of measurement of small magnetic moments using superconducting null-picovoltmeter (SNPV) is described. It is shown that in the mode with optimal voltage sensitivity (≥10–12 V), the sensitivity of SNPV to a magnetic moment can reach 10–8 emu, the level only implemented in SQUIDs. An example is given of using SNPV to measure the magnetic susceptibility of superconducting diamagnetic and paramagnetic samples, approximately 1 mm3 in volume, with different signs of the magnetization in the magnetizing alternating magnetic fields with induction of about 1 G, at low temperatures.

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References

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Authors and Affiliations

  1. Verkin Institute for Low Temperature Physics and Engineering, National Academy of Sciences of Ukraine, pr. Lenina 47, Kharkov, 61103, Ukraine

    Yu. N. Chiang & M. O. Dzyuba

Authors
  1. Yu. N. Chiang
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  2. M. O. Dzyuba
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Correspondence to Yu. N. Chiang.

Additional information

Original Russian Text © Yu.N. Chiang, M.O. Dzyuba, 2016, published in Pribory i Tekhnika Eksperimenta, 2016, No. 4, pp. 88–91.

The article was translated by the authors.

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Chiang, Y.N., Dzyuba, M.O. Highly-sensitive analog magnetometer based on a null-picovoltmeter. Instrum Exp Tech 59, 565–568 (2016). https://doi.org/10.1134/S0020441216030234

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  • DOI: https://doi.org/10.1134/S0020441216030234

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