Dr. Keppens earned her bachelor’s degree (1989) and Ph.D. (1995) in Physics from the Katholieke Universiteit Leuven (Belgium). Her dissertation research included the study of the anomalous properties of disordered solids at low temperatures. From 1995 to 1998, Dr. Keppens was a Fulbright fellow in the novel materials group at Oak Ridge National Laboratory, where she became interested in the elastic properties of new materials. In 1998 she received a Humboldt-fellowship to do research at the Institut fuer angewandte Physik in Heidelberg. In 1999, Dr. Keppens joined the faculty in the Physics Department at The University of Mississippi. There she taught courses in introductory physics and modern physics, and set-up a laboratory for Resonant Ultrasound Spectroscopy. In 2003, Dr. Keppens joined the faculty at the University of Tennessee, where she continues to study the elastic properties and lattice dynamics of novel materials. Dr. Keppens has authored or co-authored over 50 technical papers and has contributed to over 70 (15 invited) technical presentations at national and international conferences.
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Elastic moduli of superhard rhenium diboride (with Michael R. Koehler, Brian C. Sales, Rongying Jin, and David Mandrus), Journal of Applied Physics D: Applied Physics (2009)
The elastic moduli of polycrystalline rhenium diboride are measured as a function of temperature between...
Itinerant antiferromagnetism in BaCr2As2: Experimental characterization and electronic structure calculations (with D.J. Singh, A.S. Sefat, M.A. McGuire, B.C. Sales, D. Mandrus, and L.H. VanBebber), Physics Review B (2009)
We report single-crystal synthesis, specific-heat and resistivity measurements and electronic structure calculations for BaCr2As2. This...
Development and Characterization of Low-Density Ca-Based Bulk Metallic Glasses: An Overview (with O.N. Senkov, D.B. Miracle, and P.K. Liaw), Metallurgical and Materials Transactions A (2008)
Ca-based bulk metallic glasses (BMGs) have unique properties and represent a new seventh group of...
Phase transitions in LaFeAsO: Structural, magnetic, elastic, and transport properties, heat capacity and Mössbauer spectra (with Michael A. McGuire, Andrew D. Christianson, Athena S. Sefat, Brian C. Sales, Mark D. Lumsden, Rongying Jin, E. Andrew Payzant, David Mandrus, Yanbing Luan, Raphael P. Hermann, Moulay T. Sougrati, Fernande Grandjean, and Gary J. Long), Physics Review B (2008)
We present results from a detailed experimental investigation of LaFeAsO, the parent material in the...
Physical factors controlling the ductility of bulk metallic glasses (with Y. Liu, H. Wu, C.T. Liu, and Z. Zhang), Applied Physics Letters (2008)
In order to identify key physical factor controlling the deformation and fracture behavior of bulk...