Despite its advantages, high frequency ESR faces several challenges:
Complex Instrumentation: The setup for high frequency ESR is complex and requires precise control of high-frequency microwaves and strong magnetic fields. Sample Preparation: Preparing samples that can withstand high frequency and magnetic fields without degradation can be challenging. Data Interpretation: Interpreting ESR spectra can be complex, especially for samples with multiple types of unpaired electrons or inhomogeneous materials.
