Shell-Dependent Evolution of Optical and Magnetic Properties of Co@Au Core–Shell Nanoparticles

2012 ◽  
Vol 116 (20) ◽  
pp. 11343-11350 ◽  
Author(s):  
Yujun Song ◽  
Jie Ding ◽  
Yinghui Wang
Keyword(s):  
Magnetic Properties ◽  
Core Shell ◽  
Shell Nanoparticles ◽  
Optical And Magnetic Properties ◽  
Core Shell Nanoparticles

Magnetic-field-induced self-assembly of FeCo/CoFe2O4 core/shell nanoparticles with tunable collective magnetic properties

Nanoscale ◽  
2021 ◽  
Vol 13 (8) ◽  
pp. 4519-4529
Author(s):  
J. Mohapatra ◽  
J. Elkins ◽  
M. Xing ◽  
D. Guragain ◽  
Sanjay R. Mishra ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Magnetic Properties ◽  
Physical Properties ◽  
Self Assembly ◽  
Core Shell ◽  
Shell Nanoparticles ◽  
Novel Approach ◽  
Core Shell Nanoparticles

Self-assembly of nanoparticles into ordered patterns is a novel approach to build up new consolidated materials with desired collective physical properties.

From Mn3O4/MnO core–shell nanoparticles to hollow MnO: evolution of magnetic properties

2018 ◽  
Vol 29 (5) ◽  
pp. 055703 ◽  
Author(s):  
A Omelianchik ◽  
G Singh ◽  
Brigitte H McDonagh ◽  
V Rodionova ◽  
D Fiorani ◽  
...  
Keyword(s):  
Magnetic Properties ◽  
Core Shell ◽  
Shell Nanoparticles ◽  
Core Shell Nanoparticles

The preparation, oxidation resistance and magnetic properties of Co2FeAl@C core-shell nanoparticles

2019 ◽  
Vol 785 ◽  
pp. 553-556
Author(s):  
Fujun Yang ◽  
Degao Liu ◽  
Peng Xiong ◽  
Yunjie Jia ◽  
Wanjun Li ◽  
...  
Keyword(s):  
Magnetic Properties ◽  
Oxidation Resistance ◽  
Core Shell ◽  
Shell Nanoparticles ◽  
Core Shell Nanoparticles

Structure, morphology and magnetic properties of Fe–Au core-shell nanoparticles

2007 ◽  
Vol 601 (18) ◽  
pp. 4352-4357 ◽  
Author(s):  
O. Pana ◽  
C.M. Teodorescu ◽  
O. Chauvet ◽  
C. Payen ◽  
D. Macovei ◽  
...  
Keyword(s):  
Magnetic Properties ◽  
Core Shell ◽  
Shell Nanoparticles ◽  
Structure Morphology ◽  
Core Shell Nanoparticles

Synthesis and Magnetic Properties of FePt Nanoparticles with Hard Nonmagnetic Shells

2007 ◽  
Vol 7 (1) ◽  
pp. 350-355 ◽  
Author(s):  
Shishou Kang ◽  
Shifan Shi ◽  
G. X. Miao ◽  
Zhiyong Jia ◽  
David E. Nikles ◽  
...  
Keyword(s):  
Magnetic Properties ◽  
Crystallographic Orientation ◽  
Sol Gel ◽  
Molar Ratio ◽  
Core Shell ◽  
Fept Nanoparticles ◽  
Shell Nanoparticles ◽  
Spherical Core ◽  
Size And Morphology ◽  
Core Shell Nanoparticles

Chemically synthesized FePt nanoparticles were coated with nonmagnetic SiO2 and MnO shells by sol–gel and polyol processes. TEM images show that the FePt/SiO2 nanoparticles exhibit a thick spherical shell. The size and morphology of the MnO shell can be controlled by changing the reaction temperature, the molar ratio of surfactants/Mn(acac)2, and/or the concentration of precursor. The morphology of the MnO shell can be either spherical-like or cubic-like, depending on whether the molar ratio of surfactants/Mn(acac)2 is less than or larger than 2. From XRD measurements, the spherical core/shell nanoparticles exhibit 3D random crystallographic orientation, while the cubic core/shell nanoparticles prefer (200) texture. The magnetic moment of FePt particles can be enhanced by coating with SiO2 and MnO shells. Furthermore, the agglomeration of FePt particles upon the thermal annealing can be significantly inhibited with SiO2 and MnO shells.

scholarly journals Core-Shell Nanostructure ofα-Fe2O3/Fe3O4: Synthesis and Photocatalysis for Methyl Orange

2011 ◽  
Vol 2011 ◽  
pp. 1-5 ◽  
Author(s):  
Yang Tian ◽  
Di Wu ◽  
Xiao Jia ◽  
Binbin Yu ◽  
Sihui Zhan
Keyword(s):  
Magnetic Field ◽  
Magnetic Properties ◽  
Methyl Orange ◽  
Molten Salts ◽  
Surface Oxidation ◽  
The Self ◽  
Core Shell ◽  
Shell Nanoparticles ◽  
Core Shell Nanoparticles

Fe3O4nanoparticle was synthesized in the solution involving water and ethanol. Then,α-Fe2O3shell was produced in situ on the surface of theFe3O4nanoparticle by surface oxidation in molten salts, formingα-Fe2O3/Fe3O4core-shell nanostructure. It was showed that the magnetic properties transformed from ferromagnetism to superparamagnetism after the primaryFe3O4nanoparticles were oxidized. Furthermore, the obtainedα-Fe2O3/Fe3O4core-shell nanoparticles were used to photocatalyse solution of methyl orange, and the results revealed thatα-Fe2O3/Fe3O4nanoparticles were more efficient than the self-preparedα-Fe2O3nanoparticles. At the same time, the photocatalyzer was recyclable by applying an appropriate magnetic field.

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