 UW-Madison MRSEC |
Alloying and Nanostructuring MgB2 |
Principal Investigator:
Paul M. Voyles - voyles@engr.wisc.edu
| Voyles is using atomic-resolution structural and electronic state characterization in the scanning transmission electron microscope (STEM) to elucidate the origins of very high critical magnetic fields in the superconductor magnesium diboride. The magnetic field behavior of this material is a result of the interplay between it's novel two-gap electronic structure and scattering centers in the structure including lattice defects, grain boundaries, and dopants. Z-contrast STEM imaging will be use to characterize the atomic structure of defects and dopant distributions, and position-resolved electron energy-loss spectroscopy will be use to characterize the resulting shifts in electronic structure. This seed project complements and expands the research efforts of IRG2 on magnesium diboride. |
