scholarly journals Synthesis, microstructure, and magnetic properties of -Fe2O3/NiO core/shell nanoflowers

2016 ◽  
Vol 65 (14) ◽  
pp. 147101
Author(s):  
Li Zhi-Wen ◽  
He Xue-Min ◽  
Yan Shi-Ming ◽  
Song Xue-Yin ◽  
Qiao Wen ◽  
...  
Keyword(s):  
Magnetic Properties ◽  
Core Shell ◽  
Microstructure And Magnetic Properties

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

2019 ◽  
Vol 21 (22) ◽  
pp. 11967-11976 ◽  
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.

Microstructure and magnetic properties of core-shell Nd-La-Fe-B sintered magnets

2018 ◽  
Vol 749 ◽  
pp. 580-585 ◽  
Author(s):  
Jiaying Jin ◽  
Zheng Wang ◽  
Guohua Bai ◽  
Baixing Peng ◽  
Yongsheng Liu ◽  
...  
Keyword(s):  
Magnetic Properties ◽  
Core Shell ◽  
Sintered Magnets ◽  
Microstructure And Magnetic Properties

Microstructure and magnetic properties of SiO2/FeCoNiSi0.25 high-entropy alloy with a core/shell structure

2021 ◽  
Vol 290 ◽  
pp. 129399
Author(s):  
Shaofeng Yang ◽  
Jianan Wen ◽  
Fangyang Zhang ◽  
Jingyi Xie ◽  
Jiao Mo ◽  
...  
Keyword(s):  
Magnetic Properties ◽  
Shell Structure ◽  
High Entropy Alloy ◽  
Core Shell ◽  
High Entropy ◽  
Core Shell Structure ◽  
Microstructure And Magnetic Properties

Microstructure and magnetic properties of Fe–6.5 wt.% Si/MnZn(Fe2O4)2 composites with core-shell structure prepared by spark plasma sintering

2017 ◽  
Vol 31 (16-19) ◽  
pp. 1744013 ◽  
Author(s):  
Liang Yan ◽  
Biao Yan
Keyword(s):  
Magnetic Properties ◽  
Shell Structure ◽  
Core Shell ◽  
Soft Magnetic ◽  
Magnetic Composites ◽  
Plasma Sintering ◽  
Soft Magnetic Composites ◽  
Spark Plasma ◽  
Core Shell Structure ◽  
Microstructure And Magnetic Properties

Fe–6.5 wt.% Si powder coated with 10 wt.% MnZn(Fe2O4)2 (MnZn ferrite) was successfully prepared by using dry-type stirring ball milling. The Fe–6.5 wt.% Si/MnZn(Fe2O4)2 soft magnetic composites were prepared by subsequent spark plasma sintering. This paper aims at analyzing the microstructure and magnetic properties of Fe–6.5 wt.% Si/MnZn(Fe2O4)2 soft magnetic composites (sintering temperature: 750[Formula: see text]C, sintering pressure: 50 MPa, holding time: 8 min, heating rate: 60 K/min). Based on X-ray diffraction and scanning electron microscopy, microstructure and powder morphology were examined and magnetic measurements on bulk samples were conducted by vibrating sample magnetometer and impedance analyzer. According to the experiments results, Fe–6.5 wt.% Si/MnZn(Fe2O4)2 composites displayed a core-shell structure, and ceramic phase was observed after sintering. The Fe–6.5 wt.% Si/MnZn(Fe2O4)2 composites achieved high resistivity ([Formula: see text] m[Formula: see text]/cm) while maintaining excellent magnetic properties ([Formula: see text] emu/g). Core losses especially at medium and high frequencies were significantly reduced.

Magnetic Properties of Fe3O4/CoFe2O4 Composite Nanoparticles with Core/Shell Architecture

2020 ◽  
Vol 65 (10) ◽  
pp. 904
Author(s):  
V. O. Zamorskyi ◽  
Ya. M. Lytvynenko ◽  
A. M. Pogorily ◽  
A. I. Tovstolytkin ◽  
S. O. Solopan ◽  
...  
Keyword(s):  
Magnetic Properties ◽  
Spinel Ferrite ◽  
Composite Nanoparticles ◽  
Core Shell ◽  
Cofe2o4 Nanoparticles ◽  
Core Diameter ◽  
The Core ◽  
Shell Particles ◽  
Interface Parameters ◽  
Shell Composite

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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