Ozhan Ozatay

TL;DR: In this paper, the authors demonstrate that a magnetic vortex, isolated within a nanoscale spin-valve structure, can be excited into persistent microwave-frequency oscillations by a spin-polarized d.c. current.

TL;DR: In this paper, the authors observed high integrated power (up to 43nW), narrow linewidth (down to 10MHz), spin transfer induced microwave emission at frequencies up to 14GHz due to precession of the free layer magnetization at room temperature.

TL;DR: In this article, the authors measured the magnetic damping parameter α in thin-film CoFeB and Permalloy (Py) nanomagnets at room temperature using a recently developed ferromagnetic resonance technique.

TL;DR: By carrying out a surface chemical analysis, it is shown that through exposure to ambient oxygen during processing, a nanomagnet can develop an antiferromagnetic sidewall oxide layer that has detrimental effects, which include a reduction in the thermal stability at room temperature and anomalously high magnetic damping at low temperatures.

TL;DR: In this paper, a permalloy-copper-permalloy nanopillar spin valve was designed to reduce the critical current for spin transfer switching while maintaining thermal stability of the free layer.