Dr. Jeffrey Hettinger
Physics Department, Science Hall
My research is presently aimed at investigating physical properties of layered superconducting materials which may be used for high-current transport (power lines) or electronic applications (switching devices). The experiments involve dissipation (resistance) measurements as a function of temperature and magnetic field. We measure the resistance from room temperature down to -450F (boiling point of liquid helium). Properties are also measured in magnetic fields which are several orders-of-magnitude larger than the earth's magnetic field. The primary focus of the research is to look at how the underlying crystal lattice and microstructure influence physical properties in these very important technological materials. Fitting of experimental results to new and existing models allow us to determine methods for improving the performance of new materials.