About this Abstract |
Meeting |
2021 TMS Annual Meeting & Exhibition
|
Symposium
|
Advanced Magnetic Materials for Energy and Power Conversion Applications
|
Presentation Title |
Kondo-like Behaviour and GMR Effect in Co-Cu Granular Alloys and Multilayers |
Author(s) |
Ricardo Lopez Anton, Mihail Ipatov, Juan Antonio Gonzalez, Juan Pedro Andres, Julian Gonzalez, Valentina Zhukova, Jakub Mino, Arcady Zhukov |
On-Site Speaker (Planned) |
Ricardo Lopez Anton |
Abstract Scope |
Co-Cu Granular alloys and multilayers have attracted considerable attention since the beginning of 1990s, due to the existence of giant magnetoresistance (GMR) effect in those materials. Solubility of Co in Cu at room temperature is almost negligible but several preparation methods allow to obtain a metastable solid solution of a small quantity of Co in Cu. Additionally, it is also noteworthy the observation of Kondo-like resistivity minimums versus temperature in as-prepared and annealed Cu-Co microwires in the last years. Hence, we have studied these phenomena in granular alloys obtained by different methods (melt-spinning, sputtering and gas aggregation), checking also the effect of thermal treatments in their properties. Finally, we are currently studying if the Kondo-like minimum also appears in multilayer system (more appropriate for GMR applications) due to interdiffusion at the interfaces. |
Proceedings Inclusion? |
Planned: |