Direct chemical synthesis of high coercivity air-stable SmCo nanoblades
Direct chemical synthesis of high coercivity air-stable SmCo nanoblades
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DOI：
10.1063/1.2963034
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发表时间：
2008-07-21
影响因子：
4
通讯作者：
Harris, V. G.
中科院分区：
文献类型：
--
作者：
Chinnasamy, C. N.;Huang, J. Y.;Harris, V. G.
采用一步化学合成法直接制备了铁磁性空气稳定的SmCo纳米粒子。X-射线衍射研究证实了六方相SmCo5的形成是主要的相。高分辨电子显微镜证实了均匀的、各向异性的叶片状纳米颗粒的存在，宽约10 nm，长约100 nm。样品的本征矫顽力和磁化强度分别为6.1kOe和40emu/g，10K时分别为8.5kOe和44emu/g。这种直接合成工艺对环境友好，并且很容易扩展到大容量合成，以满足各种先进永磁体应用的需求。(C)2008年美国物理研究所。
Ferromagnetic air-stable SmCo nanoparticles have been produced directly using a one-step chemical synthesis method. X-ray diffraction studies confirmed the formation of hexagonal SmCo5 as a dominant phase. High resolution transmission electron microscopy confirms the presence of uniform, anisotropic bladelike nanoparticles approximately 10 nm in width and 100 nm in length. Values of the intrinsic coercivity and the magnetization in the as-synthesized particles are 6.1 kOe and 40 emu/g at room temperature and 8.5 kOe and 44 emu/g at 10 K, respectively. This direct synthesis process is environmentally friendly and is readily scalable to large volume synthesis to meet the needs for the myriad of advanced permanent magnet applications. (C) 2008 American Institute of Physics.