10.1021/acs.nanolett.8b05083.s001
Cyril Garnero
Cyril
Garnero
Mathieu Lepesant
Mathieu
Lepesant
Cécile Garcia-Marcelot
Cécile
Garcia-Marcelot
Yooleemi Shin
Yooleemi
Shin
Christian Meny
Christian
Meny
Pierre Farger
Pierre
Farger
Bénédicte Warot-Fonrose
Bénédicte
Warot-Fonrose
Raul Arenal
Raul
Arenal
Guillaume Viau
Guillaume
Viau
Katerina Soulantica
Katerina
Soulantica
Pierre Fau
Pierre
Fau
Patrick Poveda
Patrick
Poveda
Lise-Marie Lacroix
Lise-Marie
Lacroix
Bruno Chaudret
Bruno
Chaudret
Chemical Ordering in Bimetallic FeCo Nanoparticles:
From a Direct Chemical Synthesis to Application As Efficient High-Frequency
Magnetic Material
American Chemical Society
2019
FNR
ligand
Material Single-crystalline FeCo nanoparticles
X-ray diffraction studies
as-prepared nanoparticles exhibit
precursor
presence
Bimetallic FeCo Nanoparticles
synthesis
FeCo nanoparticles
B 2 structure
chemical
Direct Chemical Synthesis
2019-02-13 00:00:00
Journal contribution
https://acs.figshare.com/articles/journal_contribution/Chemical_Ordering_in_Bimetallic_FeCo_Nanoparticles_From_a_Direct_Chemical_Synthesis_to_Application_As_Efficient_High-Frequency_Magnetic_Material/7712081
Single-crystalline
FeCo nanoparticles with tunable size and shape
were prepared by co-decomposing two metal-amide precursors under mild
conditions. The nature of the ligands introduced in this organometallic
synthesis drastically affects the reactivity of the precursors and,
thus, the chemical distribution within the nanoparticles. The presence
of the B2 short-range order was evidenced in FeCo nanoparticles prepared
in the presence of HDAHCl ligands, combining <sup>57</sup>Fe Mössbauer,
zero-field <sup>59</sup>Co ferromagnetic nuclear resonance (FNR),
and X-ray diffraction studies. This is the first time that the B2
structure is directly formed during synthesis without the need of
any annealing step. The as-prepared nanoparticles exhibit magnetic
properties comparable with the ones for the bulk (<i>M</i><sub>s</sub> = 226 Am<sup>2</sup>·kg<sup>–1</sup>). Composite
magnetic materials prepared from these FeCo nanoparticles led to a
successful proof-of-concept of the integration on inductor-based filters
(27% enhancement of the inductance value at 100 MHz).