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Pt/Co/heavy metal (HM) tri-layered structures with interfacial perpendicular magnetic anisotropy (PMA) are currently under intensive research for several emerging spintronic effects, such as spin-orbit torque (SOT) [1, 2], domain wall motion [3, 4] and room temperature skyrmions [5, 6].
Finemet-type nanocrystalline soft magnetic alloys have shown attractive magnetic properties[1-3]. However, due to the relatively low Curie point of the residual amorphous matrix, they cannot be used at high temperature[4-5]. Partial substitution of Co for Fe was carried out to meet the desire for high temperature magnetic properties[6-7]. When Co was added to the FeSiBNbCu alloys, although the Curie...
MnTe is a kind of antiferromagnetic semiconductor with Néel temperature (TN) of 307 K [1]. Mn1−xCrxTe was investigated as diluted magnetic semiconductor [2]. The structure, magnetic and transport properties of MnTe [3] and Mn1−xCrxTe [4,5] films were investigated. In these previous works, some of the films represent different characteristic from the bulk ones, such as ferromag-netism at room temperature...
Soft magnetic alloys have been widely applied to modern technology devices, such as transformer cores, choke coils and inductive devices. Magnetic field annealing can induce an uniaxial magnetic anisotropy Ku [1-4] so as to improve the soft magnetic properties of alloys for the purpose of coping with different application requirements. So far, FeCo-based nanocrystalline alloys have been explored increasingly...
Finemet alloys exhibit superior soft magnetic properties with high initial permeability (μ), low coercivity and low core loss, which attracted a great deal of attention [1]. However, their application is limited to the temperature close to the Curie point of an amorphous matrix, Tcam, because the intergranular magnetic coupling is usually interrupted by the paramagnetic amorphous matrix. As the result,...
Ferromagnetic electrodes with perpendicular magnetic anisotropy (PMA) have been extensively studied because of the outstanding performance in applications. [1] To obtain high tunneling magnetoresistance (TMR), researchers have put efforts to realize PMA with Co-based full-Heusler alloy films with MgO barrier. However, the lattice mismatch between MgO and full-Heusler alloy leads to a rapid TMR reduction...
This paper reports the results of the material optimization of phosphorus-doped polycrystalline silicon germanium (poly-SiGe) for use in thermoelectric energy harvesting. The problem of high specific contact resistance is tackled by optimizing the microfabrication process and choosing a new metal stack for interconnect. Other material properties relevant to the thermoelectric energy harvesting have...
Time-reversed electromagnetic wave has the property of spatial super-resolution focusing in far-field circumstances. This paper provides a novel method to design compact multi-antenna for wireless communication system using time reversal super-resolution property. A new type of planar microstructured antennas with the super-resolution of 1/15 wavelength is constructed and simulated with the aid of...
We studied a low temperature deposition of tungsten-alloy barrier and copper layers only by electroless plating, with an aim of realizing low resistance TSV with a high aspect ratio. We succeeded in successive deposition of W-Ni-P barrier layer and Cu on SiO2. Furthermore, we found that the addition of Cl ions to SPS- and PEG-plating bath significantly improved the conformal deposition property even...
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