Direct Synthesis of L10-FePt Nanoparticles with High Coercivity via Pb Addition for Applications in Permanent Magnets and Catalysts

Direct Synthesis of L10-FePt Nanoparticles with High Coercivity via Pb Addition for Applications in Permanent Magnets and Catalysts
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通过添加 Pb 直接合成具有高矫顽力的 L10-FePt 纳米颗粒,用于永磁体和催化剂

DOI:
10.1021/acsanm.9b02420
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发表时间:
2020-02
影响因子:
5.9
通讯作者:
Qiang Wang
Qiang Wang
中科院分区:
材料科学2区
文献类型:
--
作者:
Wenli Pei;Dong Zhao;Chun Wu;Zhimeng Sun;Chunhong Liu;Xiaoyang Wang;Jian Zheng;Miaomiao Yan;Jianjun Wang;Qiang Wang

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我们报道了一种很有前途的策略,直接合成L10-FePt纳米粒子在永磁体和催化剂的应用。Pb具有较低的熔点、较小的表面能和较大的原子半径,可以通过产生空位和晶格畸变,促进Fe和Pt原子在L10-FePt纳米颗粒中的迁移,促进有序扩散。通过改变Pb/Pt的摩尔比和除去Pb,可以调节纳米粒子的有序度和磁性能。在适当的Pb/Pt比下,除Pb后的样品的有序度和电子容量达到20.95kOe。
We report a promising strategy to directly synthesizeL10-FePt nanoparticles for applications in permanent magnets and catalysts. The element Pb with lower melting point, smaller surface energy, and a bigger atomic radius can improve migration of Fe and Pt atoms and promote orderly diffusion in theL10-FePt nanoparticles by generating vacancies and lattice distortion. The ordering degree and magnetic properties of the nanoparticles can be tuned by changing the molar ratios of Pb/Pt and removing Pb from the nanoparticles. Theultrahigh ordering degree and a coercivity of up to 20.95 kOe were achieved by using a suitable Pb/Pt ratio after removing Pb.
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