We report a detailed study of the magnetic domain configurations and the magnetization reversal in epitaxial CrO2 100 wires 0.5–5 m widths patterned along different crystallographic directions. Magnetic force microscopy imaging in zero field reveals single domain states for wires fabricated along the magnetic easy axis, while wires perpendicular to the magnetic easy axis exhibit a stripe domain...

The magnetization behavior of long nanowires with square cross section under the influence of strong perpendicular spin-polarized current is studied theoretically. The study is based on Landau-Lifshitz-Slonczewski phenomenology. Without the current the wire is magnetized uniformly along its axis. For small currents the wire magnetization remains uniform, but it inclines with respect to the wire...

We present a novel functional for spin-density-functional theory aiming at the description of noncollinear magnetic structures. The construction of the functional employs the spin-spiral-wave state of the uniform electron gas as reference system. We show that the functional depends on transverse gradients of the spin magnetization; i.e., in contrast with the widely used local spin density appro...

UFe6Ga6 polycrystalline samples were prepared by arc-melting, and single crystals were grown by the Czochralski method. This compound crystallizes in the orthorhombic ScFe6Ga6-type structure (space group Immm, aZ5.0560(4), bZ8.5484(7) and cZ8.6914(7) Å), an ordered variant of the ThMn12-type structure. A ferromagnetic-type transition at TCZ530(5) K is seen in the magnetization and A.C.-suscepti...

We present an analytical method of calculating the mean first-passage times MFPTs for the magnetic moment of a uniaxial nanoparticle which is driven by a rapidly rotating, circularly polarized magnetic field and interacts with a heat bath. The method is based on the solution of the equation for the MFPT derived from the two-dimensional backward Fokker-Planck equation in the rotating frame. We s...

Magnetizations of R2Co14B single crystals with R = Nd and Pr have been measured under steady magnetic fields up to 300 kOe. We have shown that the observed data can be well reproduced by nearly the same set of crystalline field and R-3d exchange parameters as that in R2Fel4B system. Since the discovery of NdzFelsB, a wide variety of magnetization curves in high fields has been observed for diff...

Recent demonstrations of magnetization switching induced by in-plane current injection in heavy metal/ferromagnetic heterostructures have drawn increasing attention to spin torques based on orbital-to-spin momentum transfer. The symmetry, magnitude and origin of spin-orbit torques (SOTs), however, remain a matter of debate. Here we report on the three-dimensional vector measurement of SOTs in A...

It was found that atomically flat Co(110) films could be grown on Cu(110) using O as a surfactant. To obtain detailed knowledge on the effect of O on the growth, as well as on the magnetic properties of Co overlayer, we carried out an investigation on this system using Auger Electron Spectroscopy (AES), Low Energy Electron Diffraction (LEED), Surface Magneto-Optic Kerr Effect (SMOKE), and Scann...