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 broad range of scientific fields. High-frequency ESR (HF-ESR) spectrometers operating at sub-THz frequencies are mostly custom-made non-standard solutions. This article presents set six different exchangeable sample holders fast-loading flange for spectrometer high magnetic fields up 16 T and temperature ranges 4–400 K. Here, we report on the concept, design, illustrative measurements non-resonant liquid solution, polycrystalline-compressed powders, oriented single crystals, electrical devices under irradiation, as well transferred from ultrahigh vacuum (UHV) systems without air contamination. Our solution expands usage possibilities HF-ESR spectroscopy, showing that one presented concept enables wide applications.