Advertisement

Springer Nature is making SARS-CoV-2 and COVID-19 research free. View research | View latest news | Sign up for updates

All-thin-film GeAu thermistors for particle detection

Abstract

All-thin-film thermistors for thermal detection of nuclear radiation are described. Co-evaporated Ge 1−xAux films were deposited on 7.5·7.5·0.25 mm Si chips, along with highly interdigitated gold electrodes patterned using photolithography. Values of α≡ d(ln R)/d(lnT) greater than 6 were obtainable at any desired operating temperature by varying x. A device was tested at 0.019 K in which the 200-digit electrode pattern used gave a sensitive GeAu region 20 µm long in the bias field direction, 2000 Å thick and effectively 50 cm wide perpendicular to the bias field (L/A=2.0 cm−1). The device had α=6.5, Ge/ph=8·10−12 W/K, heat capacity between 0.7 and 4.4·10−12 J/K, and optimum bias power 1.5·10−11 W. Thermal pulses from 60 KeV x-rays absorbed in the substrate at T≤0.07 K were easily detectible with this arrangement.

This is a preview of subscription content, log in to check access.

References

  1. 1.

    C. J. Martoff, p.767 inWeak and Electromagnetic Interactions in Nuclei, Proceedings of the International Symposium WEIN-89, P. Depommier, ed., Éditions Frontières, Gif-Sur-Yvette Cedex, France (1990).

  2. 2.

    J.R. Primak, D. Seckel, B. Sadoulet, Ann Rev. Nucl. Part. Sci.38, 751 (1988).

  3. 3.

    N. J. C. Spooner, A. Bewick, G. J. Homer, P. F. Smith, J. D. Lewin, Phys. Lett.B 273, 333 (1991).

  4. 4.

    T. Shutt et al, Phys Rev. Lett.69, 3425 (1992).

  5. 5.

    B. W. Dodson et al, Phys. Rev. Lett.46, 46 (1981); S. Ikegawa et al, J. Vac. Sci. Tech.A6, 1855 (1988).

  6. 6.

    B. I. Shklovskii, A. L. Efros, J. Phys. C. Solid State,8L, 49 (1975).

  7. 7.

    N. Wang, PhD thesis, University of California Berkeley, 1991 (available from University Microfilms).

  8. 8.

    R. Clark-Jones, J. Opt. Soc. Am.43, 1 (1953).

Download references

Author information

Rights and permissions

Reprints and Permissions

About this article

Cite this article

Wang, X.X., Martoff, C.J. & Kaczanowicz, E. All-thin-film GeAu thermistors for particle detection. J Low Temp Phys 93, 349–354 (1993). https://doi.org/10.1007/BF00693445

Download citation

Keywords

  • Radiation
  • Gold
  • Heat Capacity
  • Magnetic Material
  • Operating Temperature