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A facile synthesis of anisotropic SmCo5 nanochips with high magnetic performance.
- Source :
-
Chemical Engineering Journal . Jul2018, Vol. 343, p1-7. 7p. - Publication Year :
- 2018
-
Abstract
- Highly anisotropic SmCo 5 single crystal particles are promising candidates for high-density data storage and building nanocomposite permanent magnets with large maximum energy product. Previously, nanocrystalline SmCo 5 particles obtained by calciothermic reduction exhibit low magnetic energy product due to magnetic isotropy caused by severely agglomerated equiaxial particles. In this study, we report a new strategy to fabricate highly anisotropic SmCo 5 nanochips by reductive annealing of precursors with a special designed morphology. The precursors containing single crystal Co(OH) 2 nanoflakes and crystalline Sm(OH) 3 nanorods were synthesized by a hydrothermal process, and converted into SmCo 5 nanochips by subsequent thermal reduction, during which the Co(OH) 2 nanoflakes facilitate the formation of SmCo 5 nanochips as a template and Sm(OH) 3 nanorods help to maintain the hexagonal morphology and single crystal nature. The SmCo 5 nanochips exhibit strong magnetic anisotropy and excellent room temperature magnetic properties with a remanence of 7.7 kG, coercivity of 19.3 kOe, and maximum energy product of 14.4 MGOe, which is the highest recorded value for chemical synthesized nanostructured SmCo 5 particles. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 13858947
- Volume :
- 343
- Database :
- Academic Search Index
- Journal :
- Chemical Engineering Journal
- Publication Type :
- Academic Journal
- Accession number :
- 128982831
- Full Text :
- https://doi.org/10.1016/j.cej.2018.02.060