| Autor: |
Byoung-Chul Choi, Yang-Ki Hong, Jaejin Lee, M. H. Park, Andrew Lyle, Seok Bae, Jeevan Jalli, Ryan Syslo, Gavin S. Abo |
| Rok vydání: |
2010 |
| Předmět: |
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| Zdroj: |
Journal of Magnetics. 15:103-107 |
| ISSN: |
1226-1750 |
| DOI: |
10.4283/jmag.2010.15.3.103 |
| Popis: |
We investigated spin-polarized current switching of Pac-man type Ⅱ (PM-Ⅱ) nanoelements in Pac-man shaped nanoscale spin-valves (Co/Cu/Py) using micromagnetic simulations. The effects of slot angle and antiferromag-netic (AFM) layer were simulated to obtain optimum switching in less than 2 ns. At a critical slot angle of 105˚, the lowest current density for anti-parallel to parallel (AP-P) switching was observed due to no vortex or antivortex formation during the magnetic reversal process. All other slot angles for AP-P formed a vortex or antivortex during the magnetization reversal process. Additionally, a vortex or anti-vortex formed for all slot angles for parallel to anti-parallel (P-AP) switching. The addition of an AFM layer caused the current density to decrease significantly for AP-P and P-AP at slot angles less than 90˚. However, at slot angles greater than 90˚, the current density tended to decrease by less amounts or actually increased slightly as shape anisotropy became more dominant. This allowed ultra-fast switching with 5.05 and 5.65 x 10? A/㎠ current densities for AP-P and P-AP, respectively, at a slot angle of 105˚. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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