Andrzej Maziewski

TL;DR: In this article, the authors demonstrate that excitation of a Co-substituted ferrimagnetic yttrium iron garnet thin film with linearly polarized 100 fs laser pulses triggers large-angle magnetization precession with an amplitude, phase, and frequency determined by the characteristics of the laser pulse.

Abstract: Single antidot as a passive point excitation source has been implemented to create caustic spin-wave beams in yttrium iron garnet film. Diffraction of surface magnetostatic spin waves from such antidot is investigated experimentally and theoretically. Our experimental results from Brillouin light scattering spectroscopy indicate that the diffraction beams, which manifest as reflection, extinction, and semicaustic lines, are tunable by the frequency and direction of the incident wave. Numerical calculations are in good agreement with the experimental findings and explain the directions of caustic beams caused by the diffraction.

TL;DR: In this article, the magnetic anisotropy constants in ultrathin films exhibiting perpendicular spin anisotropic properties were measured for Au/Co/Au sandwiches with Co layer thickness ranging from 8 to 15 A. The results confirmed the existence of interface anishotropy and lead to its estimation Ks=0.56 erg/cm2 whereas the volumic term was shown to be Kv=7.5×106 erg/ cm3.

TL;DR: A new way to realize a pure magnetic logic operation by using magnetic nanowires with perpendicular anisotropy based on the dipolar interaction between two neighbouring magnetic wires, which favours the creation of a domain wall is presented.

TL;DR: In this article, a phase-controlled spin wave was generated in bismuth-doped rare-earth iron garnet by linearly polarized light pulses, and the initial phase and amplitude of the spin wave were controlled by changing the polarization azimuth of the light pulses.