期刊
RSC ADVANCES
卷 11, 期 18, 页码 10463-10467出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/d1ra00072a
关键词
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资金
- National Natural Science Foundation of China [51871045, 52071070]
- Liaoning Innovative Research Team in University [LT2017011]
- Fundamental Research Funds for the Central Universities
- Doctoral Start-up Foundation of Liaoning Province [2019-BS-116]
- Project of Fundamental Research of the Education Department of Liaoning Province [LJ2020JCL032]
- Discipline Innovation Team of Liaoning Technical University [LNTU20TD-16]
The study demonstrated that annealing under a high magnetic field can lead to spheroidization and phase transformation of concave-cube FePt nanoparticles, while also enhancing the ordering degree, coercivity, and content of the L1(0)-phase.
The concave-cube FePt nanoparticles (NPs) with shape-anisotropy and element-distribution-anisotropy were annealed under a high magnetic field (HMF). The NPs underwent spheroidization and phase transformation during the annealing process. The HMF hardly affected the spheroidizing process of NPs, but obviously facilitated the disorder-order transition of the L1(0)-phase. The L1(0)-phase content, ordering degree, and the coercivity of annealed NPs increased with enhancing the HMF strength. Those results indicated that the nucleation of the L1(0)-phase and ordering diffusion of Fe/Pt atoms were promoted by the HMF.
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