| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 10624775 | Ceramics International | 2015 | 5 Pages |
Abstract
CoFe2O4/CoFe2 composite nano-ceramics with varying composition ratios were synthesized using a reduction reaction and spark plasma sintering. The compositions and particle sizes of the ceramics were then characterized using X-ray diffraction, and the mass ratios were quantitatively determined via thermal-gravity analysis. The magnetic property characteristics indicate that the coercivity decreased significantly with an increase in the soft-magnetic CoFe2 content, while the saturation magnetization drastically increased. In addition, a characterization of the Henkel plots showed a clear enhancement of the inter-phase exchange coupling when the number of soft-magnetic CoFe2 nano-particles was increased. Enhanced exchange coupling at the interface between the soft-magnetic and the hard-magnetic phases is critical for the occurrence of exchange-spring behavior, which has potential applications in the field of information technology.
Related Topics
Physical Sciences and Engineering
Materials Science
Ceramics and Composites
Authors
Jun Ou-Yang, Yue Zhang, Xiaoning Luo, Baiqian Yan, Benpeng Zhu, Xiaofei Yang, Shi Chen,