Hope College Physics Department
Research Experiences for Undergraduates
|Project Title:||A Study of the Uniformity of NiFe Electrodeposition on a Au Substrate|
|Student Name:||Daniel McNeel|
|Student's Home Institution:||Hope College|
|Research Advisor:||Dr. Jennifer Hampton|
|Source of Support:||
This material is based upon work supported by the National Science Foundation under NSF-REU Grant No. PHY/DMR-1004811, NSF-MRI Grant No. MRI-0959282, the Hope College Dean for the Natural and Applied Sciences, and Hope College Physics Department endowed funds (Frissel Fund).
The layered deposition of magnetic metals on non-magnetic metals creates materials
with giant magnetoresistance. Controlled electrodeposition may produce these
materials more easily and affordably than current techniques. This research
used three different techniques to analyze our control over the deposition
process for NiFe alloys. The three techniques were: current data during deposition,
the Scanning Electron Microscope (SEM) at Hope College, and the Atomic Force
Microscope (AFM) at Calvin College. The effects of varying the initial potential
and the deposition time were studied. The effects of using an initial potential
of 0 mV versus an open circuit initial potential were studied using current
data and SEM images. Electrochemical data showed that the deposit varied more
due to change in solution than due to the variation in initial potential. The
effects of changing the duration of deposition were studied using SEM and AFM.
SEM images were used for visual comparisons of sample uniformity. The AFM data
were analyzed for height scaling properties.
Publications and Presentations:
“A Study of the Uniformity of NiFe Electrodeposition on a Au Substrate", Daniel G. McNeel and Jennifer R. Hampton. Contributed poster, West Michigan Regional Undergraduate Science Research Conference, Van Andel Institue, Grand Rapids MI, (October 30, 2010).
“A Study of the Uniformity of NiFe Electrodeposition on a Au Substrate", Daniel G. McNeel and Jennifer R. Hampton. Contributed poster, Regional Chemistry REU Symposium, Hope College, Holland MI, (July 30, 2010).