MOKEstudy of artificial spin ice

Magneto-optical Kerr effect studies of square artificial spin ice.
K. K. Kohli, Andrew L. Balk, Jie Li, Sheng Zhang, Ian Gilbert, Paul E. Lammert, Vincent H. Crespi,
Peter Schiffer, and Nitin Samarth
Phys. Rev. B 84, 180412(R) (2011)

(a) Variation of coercivity at θ = 0 as a function of lattice spacing for square arrays. Measurements on various samples (arrays 1–4) are compared with micromagnetic simulations (black squares), comparing simulations of the same island outlines but with different spacing.  (b) Experiment and simulation for square arrays as a function of angle for the largest lattice spacing of 880 nm.

Magnonic frequency and damping in multilayers

Tunable magnonic frequency and damping in [Co/Pd]8 multilayers with variable Co layer thickness
S. Pal, B. Rana, O. Hellwig, T. Thomson, and A. Barman
Appl. Phys. Lett. 98, 082501 (2011)

(a) The time-resolved Kerr rotation data after a biexponential background subtraction and (b) the corresponding FFT spectra are shown for[Co/Pd]8 films with different Co layer thickness tCo.