Abstract:

Synthetic ruby has been the subject of scrutiny in Electron Paramagnetic Resonance (EPR) spectroscopy for decades. This paper presents a basic outline for the design and operation of the EPR spectrometer, specifically as a means to analyze synthetic ruby. Detailed guidelines on the use of the EPR spectrometer and theoretical background are given as well. X-Band microwaves were used in conjunction with a static magnetic field to induce a change in the spin of valence electrons in a sample containing Cr+3. In order to ensure correct operation, a sample of DPPH was first used to calibrate the spectrometer. Once correct operation was established, basic structural analysis of the synthetic ruby was performed.