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High-performance permanent magnets for energy-related applications require a high energy product (BH)max. It has been proposed that the two-phase materials exchange-coupled between magnetically hard and soft phases may greatly enhance the energy products.[1,2] More recently, self-assembly of two-component with hard magnetic phase FePt and soft magnetic phase Fe3Pt nanocomposites has successfully enhanced...
The ReFeO3 (where Re is rare earth element) materials crystallize in a distorted perovskite structure with an orthorhombic unit cell. They exhibit a large number of novel and interesting physical phenomena, including magneto-optic effects, colossal magnetoresistance, high-Tc superconductivity, and multiferroic behaviors[1, 2]. These materials have widely potential applications in various fields, such...
Die upsetting is an effective method to produce bulk anisotropic Nd-Fe-B magnets with nanostructure and full density [1]. A variety of experimental evidence suggests that the grain boundary a play key role in magnetic hardening [2]. Therefore, the grain boundary diffusion method is an effective way to improve the coercivity of die-upset magnet [3, 4]. However, the special role of the grain boundary...
L10 ordered FePtPd alloy films, with strong perpendicular magnetic anisotropy, are leading candidates for recording media in next-generation hard disk drives and solid state magnetic random access memory (MRAM) technologies. The magnetostrictive properties of such materials are of importance, as strain thereby in these systems will impact their magnetic switching characteristics. In heat assisted...
Ternary DyFeB nanoparticles and nanoflakes were prepared by surfactant-aid high-energy ball milling. As the particle size decreases, the coercivity decreases from 16.8 to 0.4 kOe, indicating substantial influence of the size on the coercivity of the particles. In addition, strong magnetic anisotropy was achieved in magnetically aligned DyFeB nanoflakes.
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