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Ge-based diluted magnetic semiconductors have drawn extensive attention over the past decades due to their potential to be applied in spintronic devices and to be integrated with the mainstream Si microelectronics as well. The hole-mediated effect in diluted magnetic semiconductors provides the possibility to realize the control of magnetic properties by the electrical control of free carriers. In...
The influence of relax annealing aimed at removal of the residual stresses (so-called stress-relief annealing) on various magnetic parameters, such as the relative magnetic amplitude permeability, coercivity, remanent flux density, etc. is discussed. Samples of steel cable tray material which is a part of commercially available cable routing system were investigated in order to find information about...
Structural, magnetic and optical properties of Gd:GaN layers, which are grown by reactive molecular beam epitaxy (RMBE) with different Gd concentrations, are studied using X-ray diffraction (XRD), photoconductivity, photoluminescence (PL) spectroscopy and vibration sample magnetometry (VSM) techniques. Our study reveals that the incorporation of Gd produces a large concentration of acceptor-like defects...
NiO was prepared by co-precipitation followed by an annealing. The fabricated powers showed cluster structures when the annealing temperature was 170degC and the powders showed a dominant ferromagnetic coupling with a magnetization of 105 emu/g. When the annealing temperature was higher than 170degC, the powders showed a nanocrystalline structure composed of surface spins and antiferromagnetic core...
In this work, the effects of post-annealing of CoCrPt-SiO2/Ru perpendicular magnetic recording media on magnetic properties and microstructure have been studied. CoCrPt-SiO2/Ru/Ta thin films were deposited on Si substrate by a dc magnetron sputtering method at room temperature and followed by post-annealing for 30 minutes in the range of 100 ~ 240degC. Magnetic properties such as magnetization, coercivity...
In this paper, the effect of substituting Fe partially by the 4d element Nb on the structural and magnetic properties of Tb0.27Dy0.73Fe2 is reported. Polycrystalline compounds of Tb0.27Dy0.73Fe2-xNbx (x = 0, 0.05, 0.1 and 0.2) were prepared by arc melting the constituent elements (rare earths-99.9 % pure, Fe and Nb -99.95 % pure) in an arc furnace under argon atmosphere. The ingots were annealed in...
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