Seminars are on Wednesdays, from 4:00 pm to 5:00 pm in Weniger 287, unless otherwise noted. They are often followed by a liquid state seminar at Clodfelters. This term, the seminar series is organized by Janet Tate, to whom any comments and suggestions about the series should be sent.
Last update: 3 March, 1998.
January 7: POSTPONED TO JAN 28th
January 14: Paul Hutchison, OSU Oceanography
Room temperature growth of Mg on the Si(001)-2X1 surface: A scanning tunneling microscopy study. Abstract
January 16: Ernesta Meintjes, OSU Physics (Ph. D. defense)
** Weniger 377, 3pm on Friday ** Note room and date
NMR study of heavily phosphorus-doped silicon
January 21: Professor Roger Nielsen, OSU Oceanography
** Gilbert 324 ** Note room change
New applications of electron microprobe analysis Abstract
This seminar is presented jointly with the Department of Chemistry under the auspices of the CAMR seminar series.
January 28: Paul Kier, OSU Electrical and Computer Engineering
Phosphor Development for Alternating-Current Thin-Film Electroluminescent Devices
February 4: Professor Tomaz Giebultowicz, OSU Physics
Title: TBA
February 11: Dr Michael Regan, Hewlett Packard, Corvallis
** Gilbert 324 ** Note room change
X-Ray Studies of Phase Separation in Amorphous Films Abstract
This seminar is presented jointly with the Department of Chemistry under the auspices of the CAMR seminar series.
February 18: Dr. Jim Harvey, OGI
** Gilbert 324 ** Note room change
Title TBA (subject is the use of of composites in the aerospace industry)
Dr. Harvey is an adjunct professor at OGI, a consultant for HP, and is currently editing a book on "smart materials".
This seminar is presented jointly with the Department of Chemistry under the auspices of the CAMR seminar series.
February 25: Professor William Warren, OSU Physics
Thoughts on Liquid Selenium - Something Old, New, Borrowed but not Blue"
March 4: Guenter Schneider, OSU Physics
High Precision Brillouin Zone Integration: The case of Magnetocrystalline Anisotropy Energy Abstract
March 11: APS practice talks
Francesca Monte
Mark Schroyer
Guenter Schneider
ABSTRACTS:
January 14: Paul Hutchison, OSU Oceanography
Room temperature growth of Mg on the Si(001)-2X1 surface: A scanning tunneling microscopy study.
The initial stages of Mg growth on the Si(001) 2x1 surface at room temperature (RT) have been studied by means of scanning tunneling microscopy (STM). Mg atoms form rows which run approximately perpendicular to the Si dimer rows in the Si(001) surface reconstruction. These rows are composed of three distinct features in the STM images. The characteristics of each feature are discussed and models are proposed. Additionally, significant buckling of the Si dimers is observed in the vicinity of the Mg rows at RT. The relation between buckling and Mg features is addressed. Return to seminar list
January 21: Professor Roger Nielsen, OSU Oceanography
Title: New applications of electron microprobe analysis
I am going to talk about the general aspects of probe analysis, then deal with the difficulties of light element analysis, elements at low concentration and the analysis of thin films. I will then talk about how we can now better address those problems. Return to seminar list
February 11: Dr Michael J. Regan, IJBU Advanced Research Laboratory, Hewlett Packard, Corvallis
X-Ray Studies of Phase Separation in Amorphous Films
Amorphous films are playing an increasingly important role in new technologies. Although these films are often assumed homogeneous over wide composition ranges, we now have the ability to detect and characterize a fine scale amorphous phase separation using anomalous small-angle x-ray scattering. In the analysis of sputtered metal-Ge and Fe-Si films, our methods allow us to identify the endpoints and arrive at a real-space picture of the subtle phase separation. The results suggest that fluctuations during film growth play a pivotal role in preventing simple columnar structure growth or structures that evolve systematically as the film thickens. At low metal concentrations near the metal-insulator transition, electron tunneling and hopping phenomena are probably strongly influenced by the nanometer scale structure, which also leads to unique percolation paths for the metallic phase. Return to seminar list
March 4: Guenter Schneider, OSU Physics
High Precision Brillouin Zone Integration: The case of Magnetocrystalline Anisotropy Energy