![]() Significantly enhanced effective magnetization was observed for Co/Pt multilayers with ultrathin Co layer. alloyed or core-shell), completely different electronic or geometric. These observations suggest that the magneto-crystalline anisotropy plays a key role in the magnetic anisotropy of these structures. Upon annealing for 12h at 600700, the diffusion of Co and Pt atoms led to a. By contrast, MBE grown 3.7 Å Co/16.8 Å Pt(100) multilayers show in-plane anisotropy, and 3.7 Å Co/16.8 Å Pt(110) multilayers exhibit very strong anisotropy within the film plane. This was demonstrated in both evaporated and sputtered polycrystalline multilayers, as well as in molecular beam epitaxy (MBE) grown Co/Pt(111) superlattices. The largest perpendicular magnetic anisotropy was obtained for Co/Pt multilayers with Pt(111) parallel to the film plane. The magnetic anisotropy of Co/Pt multilayers also strongly depends on the crystallographic orientation. It is shown that the largest perpendicular anisotropy occurs for Co layer thickness of 1–2 monolayers. Such dependence is illustrated and discussed for e-beam evaporated Co/Pt multilayers of various Co and Pt thicknesses. The properties of exchange-spring-coupled bilayer and superlattice films are highlighted for Sm-Co hard magnet and Fe or Co soft magnet layers.The magnetic properties of Co/Pt multilayers, in particular anisotropy and coercivity, are very sensitive to the Co layer thickness and less dependent on the Pt layer thickness. nanoparticles and the annealing effect on the nanoparticle and the surfactant are. The alloys with higher Ni content were prone to exhibit stronger magnetic anisotropy. density data storage due to their inherent high magnetic anisotropy. Estimates are made of the ultimate gain in performance that can potentially be realized in this system. Effects of annealing on the soft magnetic properties, crystallization behavior, and domain structure were investigated. Comparison of experiment and simulations indicates that the spring magnet behavior can be understood from the intrinsic properties of the hard and soft layers. The Fe demagnetization curves are reversible as expected for a spring magnet. The Fe magnetization is pinned to that of the Sm-Co at the interface, and reversal proceeds via a progressive twisting of the Fe magnetization. The X-ray diffraction results demonstrate that the silver and bismuth oxide were well crystallized after 600C thermal annealing. The magnetization reversal process for the bilayers is examined by magnetometry and magneto-optical imaging, as well as by simulations that utilize a one-dimensional model to provide the spin more » configuration for each atomic layer. Trends in coercivity with film thickness are established and related to the respective microstructures of the two orientations. Due to the great magnetic-dielectric synergistic effects, the minimum reflection loss (RL min) of annealed FeCoNiMnV 0.5 at 7.5 GHz was 57.4 dB at a thickness of 2.24 mm, and the effective absorption bandwidth (EAB) reached 6.2 GHz (11.8-18.0 GHz). In addition, the correspondingly prepared nanocrystalline soft magnetic composites (NSMCs) perform good service stability. The increase of V content had an abnormal effect on the phase-structure evolution. In both cases the c-axis, in the film plane, is the easy axis of magnetization. Historically, the term ferromagnetism was used for any material that could exhibit spontaneous magnetization: a net magnetic moment in the absence of an external magnetic field that is any material that could become a magnet.This general definition is still in common use. FeSiBCuNb powders prepared by the gas atomization method generally exhibit a wide particle size distribution and a high degree of sphericity. Uniaxial elastic strain is introduced by SA and is quenched into the ribbons even after cooling and removing the external stress. The hexagonal Sm-Co is grown via magnetron sputtering in a- and b-axis epitaxial orientations. Abstract Stress annealing (SA)-induced magnetic anisotropy is known in iron, nickel, and cobalt-based ferromagnetic metallic glass ribbons and it has already been used in commercial processes.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |