Qian x, gao my, li ad et al (2016) synthesis and characteristics of fept nanoparticle films under in situ-applied magnetic field nanoscale res lett 11:325 view article google scholar sun sh (2006) recent advances in chemical synthesis, self-assembly, and applications of fept nanoparticles. Synthesis and characteristics of fept nanoparticle films under in situ-applied magnetic field the highest magnetic field that can be generated using a write head (a small electromagnet with a soft magnetic write pole) is limited to about 15 t using the soft ferromagnet with the highest saturation magnetic flux density of 235 t for. Magnetic nanoparticles are a class of nanoparticle that can be manipulated using magnetic fields such particles commonly consist of two components, a magnetic material, often iron , nickel and cobalt , and a chemical component that has functionality.
Figure 5 shows the magnetization curves of the 13 nm embedded fe nanoparticles at a temperature t = 10 k the magnetic field was applied parallel to the plane of the film (in-plane) the paramagnetic signal of the ta substrate was fitted with a straight line and has been subtracted from the data. The co 3 o 4 films synthesized in the weak magnetic fields consist of dispersed nanoneedles, which are different from clustered nanoneedles when the magnetic field is absent moreover, the magnetic fields (of several millitesla) induced substantial changes in the nanostructures and electrochemical properties of the co 3 o 4 films. Previous work on ion irradiation control of fept thin film magnetic anisotropy is extended to ultrathin films (2–10 nm) the effects of 30 kev he ion irradiation on the magnetic properties are explored as a function of ion fluence and film thickness.
Exchange-coupling behavior in nanostructured fept/fe bilayer films yi liu university of nebraska-lincoln, room temperature with magnetic field applied perpendicular to the film plane(⊥) iii resultsanddiscussion the hysteresis loops of 30 nm fept films deposited on mgo substrates are shown in figure4. 20 xu qian, mo-yun gao, ai-dong li, xiao-yu zhou, xiao-jie liu, yan-qiang cao, chen li, di wu, synthesis and characteristics of fept nanoparticle films under in situ-applied magnetic field, nanoscale research letters, 2016, 11, 1crossref. Stratification during evaporative assembly of multicomponent nanoparticle films journal of colloid and interface science in semiconducting polymer thin films directed by magnetic fields nanoscale 2013 doi: 101039 and alignment dynamics of a block copolymer under high magnetic fields by in situ x-ray scattering.
A one-step synthesis of fept nanoparticles is reported the size, composition, and shape of the particles are controlled by varying the synthetic parameters such as molar ratio of stabilizers to metal precursor, addition sequence of the stabilizers and metal precursors, heating rate, heating temperature, and heating duration. Schematic drawing of making nanocomposite films by the gas-phase nanoparticle deposition technique for hamr media (a) deposition of preferred magnetic particles and matrix materials with in-situ magnetic field (b) formation of nanocomposite films with oriented magnetic particles embedded in non- or antiferromagnetic matrix (c) deposition of overcoat layer such as diamond-like carbon film. Synthesis of monodisperse iron-platinum (fept) nanoparticles by reduction of platinum acetylacetonate and decomposition of iron pentacarbonyl in the presence of oleic acid and oleyl amine stabilizers is reported the fept particle composition is readily controlled, and the size is tunable from 3- to 10-nanometer diameter with a standard deviation of less than 5.
Synthesis and characteristics of fept nanoparticle films under in situ-applied magnetic field by xu qian, mo-yun gao, ai-dong li, xiao-yu zhou, xiao-jie liu, yan-qiang cao, chen li and di wu download pdf (2 mb. Nanoparticles under reaction conditions functionalized surfaces polystyrene films containing gold nanoparticles have been to the strength of an applied magnetic field therefore, the viscosity can be controlled dynamically, which allows for active damping large amounts of mechanical power can be controlled. The effect of in-situ applied magnetic field on the structure, morphology and magnetic properties of fept nanoparticle films was characterized under magnetic field as-synthesized fept nanoparticles are monodispersed and can be self-assembled over larger area by a dropping method. Fept nanoparticles with average size of 9 nm were synthesized using a diblock polymer micellar method combined with plasma treatment to prevent from oxidation under ambient conditions, immediately after plasma treatment, the fept nanoparticle arrays were in situ transferred into the film-growth.
Abstract in situ external magnetic field was applied during the synthesis of fept nanoparticles via a chemical solution method fept nanoparticle films were prepared on si by a drop-coating method with and without a magnetic field. Is used to tune the magnetic properties of nanoparticles, since the extent of dipolar coupling is related to the distance between particles and this in turn depends on the thickness of the inert silica shell 3 iron oxide, one of the most used magnetic materials. In situ external magnetic field was applied during the synthesis of fept nanoparticles via a chemical solution method fept nanoparticle films were prepared on si by a drop-coating method with and.