Ferromagnetic resonance in nanoscale CoFeB/MgO magnetic tunnel junctions.

Autor: Hirayama, E., Kanai, S., Sato, H., Matsukura, F., Ohno, H.
Předmět:
Zdroj: Journal of Applied Physics; 2015, Vol. 117 Issue 17, p17B708-1-17B708-4, 4p, 1 Diagram, 5 Graphs
Abstrakt: We investigate the junction size dependence of magnetic properties of a CoFeB free layer in CoFeB/MgO magnetic tunnel junctions (MTJs) by homodyne-detected ferromagnetic resonance, where the diameter of the circular MTJs is varied from 35 nm to 100 nm. We observe the increase of the effective perpendicular magnetic anisotropy field and the apparent damping constant in the free layers with decreasing diameter. [ABSTRACT FROM AUTHOR]
Databáze: Complementary Index