Sample Holders for Sub-THz Electron Spin Resonance Spectroscopy

Electron spin resonance (ESR) is a powerful spectroscopic technique used to investigate samples with unpaired electrons in a broad range of scientific fields. High-frequency ESR (HF-ESR) spectrometers operating at sub-THz frequencies are mostly custom-made with non-standard solutions. This article p...

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Bibliographic Details
Published inIEEE transactions on instrumentation and measurement Vol. 71; pp. 1 - 12
Main Authors Sojka, Antonin, Sedivy, Matus, Lagin, Adam, Gabris, Andrej, Laznicka, Tomas, Santana, Vinicius Tadeu, Laguta, Oleksii, Neugebauer, Petr
Format Journal Article
LanguageEnglish
Published New York IEEE 2022
The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subjects
Connectors
Crystal structure
Electron paramagnetic resonance
Electron spin
Electrons
Frequency-domain magnetic resonance (FDMR)
high-field/high-frequency electron spin resonance (ESR)/EPR
high-frequency (HF) EPR
liquids
Magnetic field measurement
Magnetic resonance
Optical waveguides
Pollution measurement
Probes
rapid scan (RS) ESR
Sample holders
Single crystals
single-crystal
Spectrometers
Spectroscopy
Spectrum analysis
Spin resonance
Temperature measurement
Terahertz frequencies
Ultrahigh vacuum
ultrahigh vacuum (UHV)
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Summary:Electron spin resonance (ESR) is a powerful spectroscopic technique used to investigate samples with unpaired electrons in a broad range of scientific fields. High-frequency ESR (HF-ESR) spectrometers operating at sub-THz frequencies are mostly custom-made with non-standard solutions. This article presents a set of six different exchangeable sample holders with a fast-loading flange for a sub-THz ESR spectrometer operating at high magnetic fields up to 16 T and temperature ranges of 4-400 K. Here, we report on the concept, design, and illustrative measurements of non-resonant ESR sample holders for the measurements of samples in a liquid solution, polycrystalline-compressed powders, oriented single crystals, electrical devices under sub-THz irradiation, as well as for samples transferred from the ultrahigh vacuum (UHV) systems without air contamination. Our solution expands the usage possibilities for HF-ESR spectroscopy, showing that one spectrometer with the presented concept of sample holders enables a wide range of applications.
ISSN:0018-9456
1557-9662
DOI:10.1109/TIM.2022.3164135