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Materials structured in the form of one-dimensional nanoarchitectures, such as nanorods and nanowires (NWs), have found widespread applications in several technological areas, such as optoelectronics, magnetism, catalysis, piezo- and thermo-electricity, biosensing, or micro-/nanoelectromechanical systems (MEMS/NEMS), among others.
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 coercivity mechanism of Sm2Co17-type magnet has been studied for a long time, it is generally acceptaed that domain wall pinning by the SmCo5 cell boundary phase is the origin of large coercivity of this kind of magnet. Several works pointed out that Cu distribution around the cell boundary phase is the reason for domain wall pinning [1][2]. However, there still exists argument in whether the...
A simple approach combining pyrolysis and hydrogen reduction is formulated for making ferromagnetic-branched nanostructures called Co multipods. The CoO multipods (branched nanostructures) were produced through the pyrolysis of cobalt-oleate in octadecane at 280degC with the presence of oleic acid under the protection of pure nitrogen. The angles between the nearest arms are 90deg. After the reduction...
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