Abstract
Magnetic tunnel junctions are nanoscale oxide heterostructures that exhibit the phenomenon of tunnel magnetoresistance. The transport and magnetic behavior of these structures depends critically on parameters such as the layer thickness and the roughness and chemical abruptness of the interfaces between the layers, which are nanometerscale in thickness. We have used high resolution electron microscopy, transmission electron microscopy chemical mapping and atom probe tomography to understand the microstructural origins of the magnetic and transport properties of magnetoresistive structures. We have also used insitu transmission electron microscopy nanobiasing experiments to probe the local transport properties of magnetic tunnel junctions as a function of processing conditions.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 16-20 |
| Number of pages | 5 |
| Journal | International Journal of Materials Research |
| Volume | 101 |
| Issue number | 1 |
| DOIs | |
| State | Published - May 28 2010 |
Keywords
- Electron microscopy
- Interfaces
- Magnetic
- Tunnel junctions
ASJC Scopus subject areas
- Condensed Matter Physics
- Physical and Theoretical Chemistry
- Metals and Alloys
- Materials Chemistry