Electron Paramagnetic Resonance
Published Online: 18 MAY 2012
Copyright © 2003 by John Wiley & Sons, Inc. All rights reserved.
Characterization of Materials
How to Cite
Eaton, G. R. and Eaton, S. S. 2012. Electron Paramagnetic Resonance. Characterization of Materials. 1–13.
- Published Online: 18 MAY 2012
Electron paramagnetic resonance (EPR), also known as electron spin resonance (ESR) or electron magnetic resonance (EMR), is the method of choice for characterizing unpaired electrons in materials. With proper attention to experimental methods, EPR can provide quantitation of the concentrations of unpaired electrons and characterize the chemical environment of the spin. It is routinely applied to solid or liquid samples. Cryogenic temperatures may be needed to observe transition metal ions with rapid electron spin relaxation.
- electron spin;
- organic radical;
- metal ion;
- unpaired electron