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Raising the sensitivity of the electron-paramagnetic-resonance spectrometer using a ferroelectric resonator

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Abstract

In order to raise the sensitivity of microwave electron-paramagnetic-resonance (EPR) spectrometers, it is proposed to use a piece of ferroelectric material as an additional resonator. The method has been tested using the RE-1307 microwave EPR spectrometer and a pulsed microwave spectrometer. The possibility of raising the signal-to-noise ratio when using ferroelectric resonators of rectangular-parallelepiped and spherical shape has been considered. For a potassium-tantalate ferroelectric resonator of rectangular-parallelepiped shape, the signal-to-noise ratio has been raised by a factor of 16 at 331 K and by a factor of 10 at 292 K. In the pulse experiment, the presence of the ferroelectric resonator permits a reduction in microwave power, required for sample saturation, by a factor of 50 at 50 K.

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Authors and Affiliations

  1. Institute of Semiconductor Physics, National Academy of Sciences of Ukraine, Kiev, 252028, Ukraine

    I. N. Geifman, I. S. Golovina & E. R. Zusmanov

  2. North Western University, Evanston, USA

    V. I. Kofman

Authors
  1. I. N. Geifman
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  2. I. S. Golovina
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  3. E. R. Zusmanov
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  4. V. I. Kofman
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Translated from Zhurnal Tekhnichesko\(\overset{\lower0.5em\hbox{$\smash{\scriptscriptstyle\smile}$}}{l} \) Fiziki, Vol. 70, No. 2, 2000, pp. 121–124.

Original Russian Text Copyright © 2000 by Geifman, Golovina, Zusmanov, Kofman.

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Geifman, I.N., Golovina, I.S., Zusmanov, E.R. et al. Raising the sensitivity of the electron-paramagnetic-resonance spectrometer using a ferroelectric resonator. Tech. Phys. 45, 263–266 (2000). https://doi.org/10.1134/1.1259610

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  • DOI: https://doi.org/10.1134/1.1259610

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