Version 1
: Received: 6 November 2024 / Approved: 6 November 2024 / Online: 7 November 2024 (03:30:34 CET)
How to cite:
Soroceanu, I.; Diaconu, A.; Salmon, L.; Molnár, G.; Rotaru, A. RF Dielectric Permittivity Sensing of Molecular Spin State Switching Using a Tunnel Diode Oscillator. Preprints2024, 2024110482. https://doi.org/10.20944/preprints202411.0482.v1
Soroceanu, I.; Diaconu, A.; Salmon, L.; Molnár, G.; Rotaru, A. RF Dielectric Permittivity Sensing of Molecular Spin State Switching Using a Tunnel Diode Oscillator. Preprints 2024, 2024110482. https://doi.org/10.20944/preprints202411.0482.v1
Soroceanu, I.; Diaconu, A.; Salmon, L.; Molnár, G.; Rotaru, A. RF Dielectric Permittivity Sensing of Molecular Spin State Switching Using a Tunnel Diode Oscillator. Preprints2024, 2024110482. https://doi.org/10.20944/preprints202411.0482.v1
APA Style
Soroceanu, I., Diaconu, A., Salmon, L., Molnár, G., & Rotaru, A. (2024). RF Dielectric Permittivity Sensing of Molecular Spin State Switching Using a Tunnel Diode Oscillator. Preprints. https://doi.org/10.20944/preprints202411.0482.v1
Chicago/Turabian Style
Soroceanu, I., Gábor Molnár and Aurelian Rotaru. 2024 "RF Dielectric Permittivity Sensing of Molecular Spin State Switching Using a Tunnel Diode Oscillator" Preprints. https://doi.org/10.20944/preprints202411.0482.v1
Abstract
We introduce a novel approach to study the dielectric permittivity of spin crossover (SCO) molecular materials using a radio frequency (RF) resonant tunnel diode oscillator (TDO) circuit. By fabricating a parallel plate capacitor using SCO particles embedded into a polymer matrix as an integral part of the LC tank of the TDO we were able to extract the temperature dependence of the dielectric permittivity from frequency measurements for a wide selection of resonance values, spanning from 100 kHz up to 50 MHz, with great precision (less than 2 ppm), in a broad temperature range. By making use of this simple electronic circuit to explore the frequency and temperature dependent dielectric permittivity of the compound Fe[(Htrz)2(trz)]BF4 we demonstrate the reliability and resolution of the technique and show how the results compare with those obtained using complex instrumentation.
Copyright:
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
