334 citations · 899 across the 29 of their papers we have counts for
8 papers · 1 filter
Controlling magnetic configuration in soft-hard bilayers probed by polarized neutron reflectometry
Nan Tang, Jung-Wei Liao, Siu-Tat Chui +4
Hard/soft magnetic bilayer thin films have been widely used in data storage technologies and permanent magnet applications. The magnetic configuration and response to temperatures…
Internal dipolar field and soft magnons in periodic nanocomposite magnets
A. M. Belemuk, S. T. Chui
We study spin wave excitations in a three-dimensional nanocomposite magnet of exchange coupled hard (SmCo) and soft (FeCo) phases. The dipolar interaction splits the spin wave…
Miniaturization and control of split ring structures from an analytic solution of their resonance
S. T. Chui, Y. Zhang, Lei Xzhou
We derived simple polynomial equations to determine the entire resonance spectra of split ring structures. For double stacking split rings made with flat wires, we showed that the…
Large voltage from spin pumping in magnetic tunnel junctions
S. T. Chui, Z. F. Lin
We studied the response of a ferromagnet-insulator-normal metal tunnel structure under an external oscillating radio frequency (R.F.) magnetic field. The D. C. voltage across the j…
Non conservation of the magnetization current across magnetic hetero-structures
S. T. Chui, Z. F. Lin
We show that when the magnetizations on opposite sides of a junction are not collinear, the magnetization current is not conserved as the junction is crossed. Thus the usual treatm…
Current induced magnetization switching in magnetic tunnel junctions
Z. F. Lin, S. T. Chui, L. B. Hu
A new mechanism different from the spin accumulation picture is proposed for the current induced magnetization switching in magnetic tunnel junctions by taking into account the eff…
Nonlinear charging, and transport times in doped nanotubes junctions
Keivan Esfarjani, Amir A. Farajian, Siu Tat Chui +1
The nonlinear capacitance in doped nanotube junctions is calculated self consistently. It decreases as a function of the applied bias when the latter becomes larger than the pseudo…
Theoretical investigation on the possibility of preparing left-handed materials in metallic magnetic granular composites
S. T. Chui, Liangbin Hu
We investigate the possibility of preparing left-handed materials in metallic magnetic granular composites. Based on the effective medium approximation, we show that by incorporati…