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Antiferromagnetic spintronics has been recently investigated intensively in the view of realising a new device without suffering from the cross-talks between cells due to no net magnetic moment for example.
Recent studies have indicated that there is a high demand for high-efficiency machines used for home applications, such as washing machines and air conditioners. Such applications require components with high efficiency and high power density such as permanent magnet (PM) machines. In particular, variable-flux PM (VFPM) machines using a low-coercive force magnetic material have been studied extensively...
We report about the magnetization dynamics in L10 FePt discs, designed for Heat Assisted Magnetic Recording. We also determine the different nonlinear behaviors of the coercive field and saturation magnetization with increasing laser pulse energy.
We show that the ultrafast demagnetization (τM) and precession damping (ηΜ) times of rare-earth-doped Cobalt films have different physical origins. ηM is due to impurity induced spin scattering while τM is attributed to spin-orbit interaction.
We show that acoustic pulses generated by femtosecond laser pulses in a ferromagnetic thin film can efficiently couple to the magnetization after its propagation at long distances via a change in the magneto-crystalline anisotropy.
Magnetic properties have been investigated for LuFe2O4 single crystal. The temperature dependence of magnetization showed two-step phase transitions at about 160 and 230 K. The magnetization and thermoremanent magnetization in an applied field perpendicular to the c-axis are much smaller than those measured along the c-axis. It indicates that the Fe spins lie parallel to the c-axis with strong anisotropy,...
This study aims to determine the role of electron scattering in the damping mechanisms of magnetization and electrical resistivity of Permalloy thin films at varying temperatures. The complex dynamic susceptibility of the magnetic thin films are measured using ferromagnetic resonance technique. The resistivity follows a quadratic law with temperature which is attributed to electron-electron and electron-magnon...
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