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Accurate solution of electromagnetic (EM) problems with complex materials requires the formulation of volume integral equations (VIEs) in the integral equation approach. The VIEs are traditionally solved by the method of moments (MoM) with the Schaubert-Wilton-Glisson (SWG) basis function, but we propose a point-matching scheme which does not relies on any basis and testing functions and allows the...
FePt has a potential application in high-density recording medium owing to the strong uniaxial magnetocrystalline anisotropy of its L10-ordered phase, which suppresses superparamagnetism in small particles. However, in most cases, the as-prepared samples are completely disordered A1 phase (face-centered cubic) and have no uniaxial anisotropy. The subsequent annealing for ordering is usually subjected...
Magnetic nanoparticles are essential for advanced applications such as high performance permanent magnets, high density magnetic recording media, drug carriers and sensors in biomedical technology. Among various magnetic nanomaterials, the chemically ordered L10-phase Co(Fe)Pt NPs received considerable attention for its large uniaxial magnetocrystalline anisotropy. Controlled preparation of chemical...
Co based full-Heusler compounds Co2XY (X is 3d transition element, and Y is main element) show prominent prospects in spintronics, because of their theoretical half-metal states, experimental high tunneling magnetic resistance applications, and high Curie temperature (TC).[1-3] Besides, these compounds have a low magnetic damping constant, making them useful in low loss microwave application and spin...
With the fast development of information storage, exploiting new concepts for dense, fast, and non-volatile random access memory with reduced energy consumption is a significant and challenging task. To realize this goal, electric-field control of magnetism is crucial. In this regard, multiferroic materials are important and have attracted much attention due to their interesting new physics and potentials...
Rare earth-cobalt based magnetic materials have attracted considerable attention due to their large anisotropy eld (HA), high saturation magnetizations (Ms), and high Curie temperatures (TC). As the first generation of rare earth-transition metal (RE-TM) based permanent magnet, SmCo5 possesses extraordinary high anisotropy led over 240 kOe, and nanocrystalline SmCo5 magnet bears coercivity as high...
Nanocomposite magnets consisting of various nanoscale hard and soft phases are potentially the next generation permanent magnets. Textured microstructure of hard phases is one of the necessary conditions for the predicted high magnetic energy product [1]. Hot deformation is an effective method to produce conventional anisotropic Nd2Fe14B magnets [2], in which the Nd-rich phase plays an important role...
Magnetoelectric (ME) couplings in multiferroic composites exhibiting simultaneous ferromagnetic and ferroelectric phases through strain-mediated interactions have attracted great interests for their promising technological applications on magnetic sensors, energy-harvesting devices, four-state memories and microwave resonators[1, 2]. Initially, the research on magnetoelectric materials focuses on...
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