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 ◽  
...  

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

2018 ◽  
Vol 749 ◽  
pp. 580-585 ◽  
Author(s):  
Jiaying Jin ◽  
Zheng Wang ◽  
Guohua Bai ◽  
Baixing Peng ◽  
Yongsheng Liu ◽  
...  

2021 ◽  
Vol 290 ◽  
pp. 129399
Author(s):  
Shaofeng Yang ◽  
Jianan Wen ◽  
Fangyang Zhang ◽  
Jingyi Xie ◽  
Jiao Mo ◽  
...  

2019 ◽  
Vol 7 (5) ◽  
pp. 1280-1291 ◽  
Author(s):  
Alaka Panda ◽  
R. Govindaraj ◽  
R. Mythili ◽  
G. Amarendra

Bismuth and iron oxides subjected to ball milling followed by controlled annealing treatments showed the formation of core–shell nanostructures with Bi2Fe4O9 as the core and a shell of BiFeO3 and Bi25FeO40 phases as deduced based on the analysis of transmission electron microscopy results.


2017 ◽  
Vol 31 (16-19) ◽  
pp. 1744013 ◽  
Author(s):  
Liang Yan ◽  
Biao Yan

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.


2008 ◽  
Vol 457 (1-2) ◽  
pp. 560-564 ◽  
Author(s):  
Shufen Wang ◽  
Hongming Cao ◽  
Feng Gu ◽  
Chunzhong Li ◽  
Guangjian Huang

2010 ◽  
Author(s):  
Mashuri ◽  
Triwikantoro ◽  
Eddy Yahya ◽  
Darminto ◽  
Mikrajuddin Abdullah ◽  
...  

2016 ◽  
Vol 65 (14) ◽  
pp. 147101
Author(s):  
Li Zhi-Wen ◽  
He Xue-Min ◽  
Yan Shi-Ming ◽  
Song Xue-Yin ◽  
Qiao Wen ◽  
...  

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