| About this Abstract |
| Meeting |
2020 TMS Annual Meeting & Exhibition
|
| Symposium
|
Recent Advances in Functional Materials and 2D/3D Processing for Sensors and Electronic Applications
|
| Presentation Title |
Structural and Magnetic Properties of CoPd Alloys for Spintronic Applications |
| Author(s) |
Subhadra Gupta, Joseph B. Abugri, Billy D. Clark, Pieter B. Visscher |
| On-Site Speaker (Planned) |
Subhadra Gupta |
| Abstract Scope |
We have intensively studied perpendicular magnetic anisotropy (PMA) CoPd alloys deposited on a variety of seed layers for spintronic applications. These thin-film alloys can be used to pin MgO-based magnetic tunnel junctions utilized for non-volatile memory. Four different seed layers were utilized, on top of which 20 nm of Co25Pd75 was co-sputtered. The seed layers used were: Ta (5 nm), MgO (5 nm), Ta (5 nm)/Pd (5 nm) and Ta (5 nm)/Ru (5 nm)/ Ta (5 nm). The Co25Pd75 layer was capped with 5 nm Ta in each stack. The magnetic properties of the four samples varied considerably, showing the highest coercivity for the Co25Pd75 layer seeded by the Ta/Pd layers. High resolution cross-sectional transmission electron microscopy and x-ray diffraction showed that this seed layer produced the highest crystallinity in the fcc (111) Co25Pd75 film. Scanning electron micrographs showed that the Ta/Pd seed produced the smallest grain size. |
| Proceedings Inclusion? |
Planned: Supplemental Proceedings volume |