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Ultrathin perpendicular free layers for lowering the switching current in STT-MRAM
Tiffany S. Santos, Goran Mihajlovic, Neil Smith +4
The critical current density required for switching the magnetization of the free layer (FL) in a spin-transfer torque magnetic random access memory (STT-MRAM) cell is pro…
A platform for time-resolved scanning Kerr microscopy in the near-field
Paul S. Keatley, Thomas H. J. Loughran, Euan Hendry +4
Time-resolved scanning Kerr microscopy (TRSKM) is a powerful technique for the investigation of picosecond magnetization dynamics at sub-micron length scales by means of the magnet…
Magnetic phase transitions in Ta/CoFeB/MgO multilayers
I. Barsukov, Yu Fu, C. Safranski +8
We study thin films and magnetic tunnel junction nanopillars based on Ta/CoFeB/MgO multilayers by electrical transport and magnetometry measurements. These mea…
X-Ray Detection of Transient Magnetic Moments Induced by a Spin Current in Cu
R. Kukreja, S. Bonetti, Z. Chen +7
We have used a MHz lock-in x-ray spectro-microscopy technique to directly detect changes of magnetic moments in Cu due to spin injection from an adjacent Co layer. The elemental an…
Rapid Domain Wall Motion in Permalloy Nanowires Excited by Spin-Polarized Current Applied Perpendicular to the Nanowire
C. T. Boone, J. A. Katine, M. Carey +3
We study domain wall (DW) dynamics in permalloy nanowires excited by alternating spin-polarized current applied perpendicular to the nanowire. Spin torque ferromagnetic resonance m…
Time-resolved investigation of magnetization dynamics of arrays of non-ellipsoidal nanomagnets with a non-uniform ground state
P. S. Keatley, V. V. Kruglyak, A. Neudert +4
We have performed time-resolved scanning Kerr microscopy (TRSKM) measurements upon arrays of square ferromagnetic nano-elements of different size and for a range of bias fields. Th…