In-Situ Characterization of Ultra-Small Magnetic Junctions Made by Electrochemical Techniques
Abstract
Electrochemical impedance spectroscopy is used to characterize the growth of NiO over Ni electrodes. We find a limited increase of thickness and a significant increase of porosity of the oxide as a function of time and anodization potential. Conductance measurements performed on Ni/NiO/Co junctions of 30 nm diameters indicate the presence of a Coulomb blockade at low temperatures and small bias. Tunneling is observed at higher bias. Small magnetoresistance ratios (1%) are found.
Document Details
- Document Type
- Technical Report
- Publication Date
- Apr 01, 2001
- Accession Number
- ADP012278
Entities
People
- Alexander S. Sokolov
- B. Doudin
- C. S. Yang
- J. R. Jennings.
- J. Redepenning
Organizations
- University of Nebraska–Lincoln