Athenian Pottery Project
Characterization of Ceramic Microchemistry
Team members Apurva Mehta and Piero Pianetta, co-principal investigator, of the Stanford Synchrotron Radiation Lightsource (SSRL) and Stanford University, respectively, are helping direct efforts to utilize X-ray absorption spectroscopy (in particular X-ray absorption near edge spectroscopy [XANES]) to elucidate the structural phases present in iron materials present in the ceramic slips and determine their speciation.
The results of these studies, together with the TEM studies, provide a more complete picture of the chemistry and microstructure of the gloss layers from which the initial chemistry and firing conditions may be inferred.
XANES map collected at the Stanford Sycnhrotron Radiation Lightsource showing the distribution of Fe valencies on a cross-section taken from red-figure sherd. Photo: Marc Walton.
