Abstract
The history of challenges for diamond anvil cell NMR is reviewed in this article. Pros and cons of the newly emerging method are discussed first. All previous works are reviewed briefly. Our state-of-the-art techniques are presented in detail. These are (i) a new DAC design for large-volume sample to be compressed, (ii) a new RF probe design for higher sensitivity, and (iii) a magnetically tuned gasket for better static field. Using them, we have obtained high-resolution NMR spectra of liquid methanol to 4.5 GPa that is factor four larger than previous studies. These results and their implication are presented.
