Chemically synthesized anisotropic SmCo5 nanomagnets with a large energy product

Zhenhui Ma; Jingming Liang; Wen Ma; Liying Cong; Qiong Wu; Ming Yue

doi:10.1039/c9nr03412a

Chemically synthesized anisotropic SmCo₅ nanomagnets with a large energy product

Nanoscale. 2019 Jul 14;11(26):12484-12488. doi: 10.1039/c9nr03412a. Epub 2019 Jun 21.

Authors

Zhenhui Ma¹, Jingming Liang¹, Wen Ma², Liying Cong¹, Qiong Wu¹, Ming Yue¹

Affiliations

¹ College of Materials Science and Engineering, Key Laboratory of Advanced Functional Materials, Ministry of Education of China, Beijing University of Technology, Beijing 100124, China. yueming@bjut.edu.cn.
² Grinm Bohan (Beijing) Publisher Ltd., Co., Beijing, 100088, China.

PMID: 31225559
DOI: 10.1039/c9nr03412a

Abstract

In this communication, we report a facile strategy to chemically synthesize anisotropic SmCo₅ nanomagnets with a large magnetic energy product (BH). First, we designed a Co₃O₄@Sm₂O₃-CaO precursor by a one-pot method, which could be further reduced into uniform single-crystal SmCo₅ particles under the stabilization of CaO coating. Following that, CaO was removed under an oxygen-free environment to impede oxidation. Finally, 130 ± 10 nm SmCo₅ particles were aligned to be nanomagnet, exhibiting a large (BH)_max value of 18.1 MGOe, which is the highest value reported by chemical methods.