|Title||One-Pot Synthesis of Urchin-like FePd-Fe3O4 and Their Conversion into Exchange-Coupled L1(0)-FePd-Fe Nanocomposite Magnets|
|Publication Type||Journal Article|
|Year of Publication||2013|
|Authors||Yu, YS, Sun, KW, Tian, Y, Li, XZ, Kramer, MJ, Sellmyer, DJ, Shield, JE, Sun, SH|
|Type of Article||Article|
|Keywords||energy products, exchange coupling, ferromagnetic fept nanoparticles, L1(0)-FePd, nanocomposite magnets, nanocomposites, nanocrystals, phase, reductive annealing|
les (SPs), and Fe3Oi, NRs grow on the surface of these SPs. Reductive annealing at 500 degrees C converts the FePd-Fe3O4 into exchange-coupled nanocomposites L1(0)-FePd-Fe with their H-c tunable from 0.8 to 2.6 kOe and M-s controlled from 90 to 190 emu/g. The work provides a general approach to L1(0)-FePd-Fe nano composite magnets for understanding exchange coupling at the nanoscale. The concept may be extended to other magnetic nanocomposite systems and may help to build superstrong magnets for magnetic applications.
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