Evolution of FePt Nanoparticle Shape and L10 Order During In-Situ Annealing
نویسندگان
چکیده
منابع مشابه
Structural studies of L10 FePt nanoparticles
We have studied the lattice parameter changes of L10 FePt nanoparticles annealed to near equilibrium as a function of composition by x-ray diffraction. We have found that the ~111! diffraction peak shifts linearly with composition, however, the c parameter mostly changes in the Pt rich compositions and the a parameter mostly changes in the Fe rich compositions with respect to the equiatomic com...
متن کاملElectrodeposition of coercive L10 FePt magnets
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متن کاملEffects of thermal annealing on C/FePt granular multilayers: in situ and ex situ studies
The comprehensive study of C/FePt granular multilayers prepared by ion-beam sputtering at room temperature and subsequent annealing is reported. The as-deposited multilayers consist of carbon-encapsulated FePt nanoparticles (average size ∼3 nm) with a disordered face-centered-cubic structure. The effects of thermal annealing on the structural and magnetic properties are investigated by using de...
متن کاملSize-Dependent Chemical and Magnetic Ordering in L10-FePt Nanoparticles
FePt nanoparticles have great application potential in advanced magnetic materials such as ultrahigh-density recording media and high-performance permanent magnets. The key for applications is the very high uniaxial magnetocrystalline anisotropy of the L10-FePt phase, which is based on crystalline ordering of the face-centered tetragonal (fct) structure, described by the chemical-ordering param...
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ژورنال
عنوان ژورنال: Microscopy and Microanalysis
سال: 2010
ISSN: 1431-9276,1435-8115
DOI: 10.1017/s1431927610057880