从硅涂层纤铁矿纳米棒中合成亚稳态硬磁 ε-FeO 纳米颗粒。
Synthesis of metastable hard-magnetic ε-FeO nanoparticles from silica-coated akaganeite nanorods.
机构信息
Condensed Matter Physics Laboratory, Vinca Institute of Nuclear Science, University of Belgrade, POB 522, 11001 Belgrade, Serbia.
出版信息
Nanoscale. 2017 Aug 3;9(30):10579-10584. doi: 10.1039/c7nr03639f.
PMID:28715033
Abstract
We present a simple preparation route to obtain a nanoscale metastable hard-magnetic ε-FeO phase, using silica coated β-FeOOH nanorods as a precursor and an annealing process. The synthesized ε-FeO nanoparticles exhibit large coercivity (H ∼ 20 kOe at 300 K and H ∼ 1.6 kOe at 400 K), confirming their high potential for practical applications.
摘要
我们提出了一种简单的制备路线，通过使用硅烷包裹的β-FeOOH 纳米棒作为前驱体和退火过程，得到纳米级亚稳态硬磁ε-FeO 相。合成的ε-FeO 纳米颗粒表现出较大的矫顽力（在 300 K 时为 H∼20 kOe，在 400 K 时为 H∼1.6 kOe），证实了它们在实际应用中的巨大潜力。
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