Effects of high magnetic field annealing on FePt nanoparticles with shape-anisotropy and element-distribution-anisotropy

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...

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Detalles Bibliográficos
Autores principales: Wu, Chun, Jiang, Yanan, Niu, Zhiyuan, Zhao, Dong, Pei, Wenli, Wang, Kai, Wang, Qiang
Formato: Online Artículo Texto
Lenguaje:English
Publicado: The Royal Society of Chemistry 2021
Materias:
Chemistry
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8695698/
https://www.ncbi.nlm.nih.gov/pubmed/35423594
http://dx.doi.org/10.1039/d1ra00072a
Descripción
Sumario: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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