Study of perpendicular anisotropy L10-FePt pseudo spin valves using a micromagnetic trilayer model.

Autor: Pin Ho, Evans, Richard F. L., Chantrell, Roy W., Guchang Han, Gan-Moog Chow, Jingsheng Chen
Předmět:
Zdroj: Journal of Applied Physics; 6/7/2015, Vol. 117 Issue 21, p213901-1-213901-10, 10p, 1 Black and White Photograph, 2 Diagrams, 3 Charts, 8 Graphs
Abstrakt: A trilayer micromagnetic model based on the Landau-Lifshitz-Bloch equation of motion is utilized to study the properties of L10-FePt/TiN/L10-FePt pseudo spin valves (PSVs) in direct comparison with experiment. Theoretical studies give an insight on the crystallographic texture, magnetic properties, reversal behavior, interlayer coupling effects, and magneto-transport properties of the PSVs, in particular, with varying thickness of the top L10-FePt and TiN spacer. We show that morphological changes in the FePt layers, induced by varying the FePt layer thickness, lead to different hysteresis behaviors of the samples, caused by changes in the interlayer and intralayer exchange couplings. Such effects are important for the optimization of the PSVs due to the relationship between the magnetic properties, domain structures, and the magnetoresistance of the device. [ABSTRACT FROM AUTHOR]
Databáze: Complementary Index