Anomalous Hall effect and magnetoresistance of (Fe_xSn_1−x)_1−y(SiO₂)_yfilms

Abstract

Structural, magnetic and transport properties were investigated for heterogeneous (FexSn1−x)1−y(SiO2)y films deposited on oxidized silicon substrates at room temperature with RF magnetron sputtering. X-ray diffraction indicated that the films consist of a nanocrystalline phase of FeSn2 embedded into an amorphous background. For (FexSn1−x)92.33(SiO2)7.67, it was demonstrated that with the increase in the Fe component an evolution from negative isotropic magnetoresistance (MR) behaviour to one with a mixture of anisotropic magnetoresistance and isotropic negative MR occurs. On fixing the SiO2 percentage and decreasing the Fe–Sn ratio, the negative transverse MR first increases and then decreases. For samples having a fixed Fe–Sn ratio, the negative transverse MR increases with the increase in SiO2. Compared with the Fe–Sn system, the addition of 7.67 at.% SiO2 enhances the saturated Hall resistivity. Further increase in SiO2 introduces a complicated saturated Hall resistivity dependence on the concentration of SiO2.

Cold atmospheric pressure plasmas in dermatology: Sources, reactive agents, and therapeutic effects

“…[ 12,21 ] This is particularly important for dermatology, for example, the NO can promote wound healing by promoting the growth of blood vessels and fibroblasts. [ 81 ] The concentration determines the treatment time and dose, therefore, it should be accurately measured. The NO concentration can be measured by using mass spectrometry, [ 65 ] optical absorption spectroscopy, [ 82 ] optical emission spectroscopy, [ 83 ] and laser‐induced fluorescence.…”

“…Theoretical modeling was used to compare the contributions of sterilizing bacteria and increasing NO concentration of CAP on chronic wound healing. [ 81 ] The high sterilization efficiency of the plasma decreased the oxygen consumed by bacteria, and simultaneously increased the oxygen provided to the extracellular matrix (ECM) and growing blood vessels. However, the contribution of NO to wound healing was limited, because the amount of NO provided by the plasma was lower than needed to diffuse through wound fluid.…”

“…However, the contribution of NO to wound healing was limited, because the amount of NO provided by the plasma was lower than needed to diffuse through wound fluid. [ 81,157 ] On the contrary, macrophages influenced myofibroblast numbers and ECM deposition after injury, [ 16 ] further study of CAP's effect on the fibrotic environment can explore the interactions between subpopulations of wound bed macrophages and fibroblasts, which is quite important for the development of more efficient CAP therapy target multiple cellular populations or signaling pathways. [ 16 ]…”

New approach for preparation of dry natural rubber nanocomposites through acid‐free co‐coagulation: Effect of organoclay content

“…Quaternary amine does not have lone‐pair electrons for formation of zinc–ammine complexes. However, quaternary amine, has a positive effect on denaturation of proteins . By denaturation, native quaternary structure of protein formed by folding of peptide backbones in protein would change into unfolded, insoluble and crystallized structure .…”

Current Dependence of Spin Torque Switching Barrier

“…Since the retention time of MRAM depends strongly on its thermal stability, an accurate evaluation of the thermal stability is required. However, there is some controversy regarding the theoretical formula of the switching probability of an in-plane magnetized system [10][11][12][13][14][15][16][17][18]. The issue is the validity of the linear scaling of the current dependence of the switching barrier.…”