Large scale re-producible synthesis and magnetic properties of Ni/graphite core-shell nanostructured materials

Magnetic properties of the sets of Fe3O4(core)/CoFe2O4(shell) composite nanoparticles with a core diameter of about 6.3 nm and various shell thicknesses (0, 1.0, and 2.5 nm), as well as the mixtures of Fe3O4 and CoFe2O4 nanoparticles taken in the ratios corresponding to the core/shell material contents in the former case, have been studied. The results of magnetic research showed that the coating of magnetic nanoparticles with a shell gives rise to the appearance of two simultaneous effects: the modification of the core/shell interface parameters and the parameter change in both the nanoparticle’s core and shell themselves. As a result, the core/shell particles acquire new characteristics that are inherent neither to Fe3O4 nor to CoFe2O4. The obtained results open the way to the optimization and adaptation of the parameters of the core/shell spinel-ferrite-based nanoparticles for their application in various technological and biomedical domains.

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Magnetic Properties of xCeO2â€¢(50 âˆ’ x) PbOâ€¢50B2O3 Glasses and Glass Ceramics

JOURNAL OF ADVANCES IN PHYSICS ◽

10.24297/jap.v13i1.6785 ◽

2017 ◽

Vol 13 (1) ◽

pp. 4486-4494 ◽

Cited By ~ 1

Author(s):

G.El Damrawi ◽

F. Gharghar

Keyword(s):

Magnetic Properties ◽

Large Scale ◽

Glass Ceramics ◽

Magnetic Behavior ◽

Crystal Formation ◽

Dual Roles ◽

Effective Agent ◽

Ordered Structures ◽

Essential Change

Cerium oxide in borate glasses of composition xCeO2Â·(50 âˆ’ x)PbOÂ·50B2O3 plays an important role in changing both microstructure and magnetic behaviors of the system. The structural role of CeO2 as an effective agent for cluster and crystal formation in borate network is clearly evidenced by XRD technique. Both structure and size of well-formed cerium separated clusters have an effective influence on the structural properties. The cluster aggregations are documented to be found in different range ordered structures, intermediate and long range orders are the most structures in which cerium phases are involved. The nano-sized crystallized cerium species in lead borate phase are evidenced to have magnetic behavior. The criteria of building new specific borate phase enriched with cerium as ferrimagnetism has been found to keep the magnetization in large scale even at extremely high temperature. Treating the glass thermally or exposing it to an effective dose of ionized radiation is evidenced to have an essential change in magnetic properties. Thermal heat treatment for some of investigated materials is observed to play dual roles in the glass matrix. It can not only enhance alignment processes of the magnetic moment but also increases the capacity of the crystallite species in the magnetic phases. On the other hand, reverse processes are remarked under the effect of irradiation. The magnetization was found to be lowered, since several types of the trap centers which are regarded as defective states can be produced by effect of ionized radiation.

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Synthesis, thermal stability, magnetic properties, and microwave absorption applications of CoNi-C core-shell nanoparticles with tunable Co/Ni molar ratio

Results in Physics ◽

10.1016/j.rinp.2021.103893 ◽

2021 ◽

Vol 22 ◽

pp. 103893

Author(s):

Lizhen Hou ◽

Xing Zhen ◽

Linlin Liu ◽

Daitao Kuang ◽

Yangyang Gao ◽

...

Keyword(s):

Thermal Stability ◽

Magnetic Properties ◽

Microwave Absorption ◽

Molar Ratio ◽

Core Shell ◽

Shell Nanoparticles ◽

Core Shell Nanoparticles

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Magnetic properties of FeCo-iron oxide core–shell nanoparticles investigated through first order reversal studies

Applied Physics A ◽

10.1007/s00339-020-04176-z ◽

2021 ◽

Vol 127 (1) ◽

Author(s):

G. Antilen Jacob ◽

R. Justin Joseyphus

Keyword(s):

Magnetic Properties ◽

Iron Oxide ◽

Core Shell ◽

Shell Nanoparticles ◽

First Order ◽

Iron Oxide Core ◽

Core Shell Nanoparticles

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

Nanoscale ◽

10.1039/d1nr00136a ◽

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.

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Exchange-biased hybrid γ-Fe2O3/NiO core–shell nanostructures: three-step synthesis, microstructure, and magnetic properties

Physical Chemistry Chemical Physics ◽

10.1039/c9cp01265f ◽

2019 ◽

Vol 21 (22) ◽

pp. 11967-11976 ◽

Cited By ~ 4

Author(s):

Xue-Min He ◽

Chuang-Wei Zhang ◽

Fang-Fang Guo ◽

Shi-Ming Yan ◽

Yong-Tao Li ◽

...

Keyword(s):

Magnetic Properties ◽

Core Shell ◽

Synthetic Process ◽

Shell Nanostructures ◽

Microstructure And Magnetic Properties

The synthetic process of γ-Fe2O3/NiO core–shell nanostructures.

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A core–shell structured magnetic Ag/AgBr@Fe2O3 composite with enhanced photocatalytic activity for organic pollutant degradation and antibacterium

RSC Advances ◽

10.1039/c5ra13403j ◽

2015 ◽

Vol 5 (87) ◽

pp. 71035-71045 ◽

Cited By ~ 32

Author(s):

Shuquan Huang ◽

Yuanguo Xu ◽

Zhigang Chen ◽

Meng Xie ◽

Hui Xu ◽

...

Keyword(s):

Magnetic Properties ◽

Photocatalytic Activity ◽

Organic Pollutant ◽

Core Shell ◽

Pollutant Degradation ◽

Antibacterial Ability ◽

Highly Efficient ◽

Organic Pollutant Degradation

A core–shell structured Ag/AgBr@Fe2O3 composite was prepared successfully. It has magnetic properties, highly efficient photocatalytic activity and antibacterial ability.

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