Study on Composition Distribution and Ferromagnetism of Monodisperse FePt Nanoparticles.

Study on Composition Distribution and Ferromagnetism of Monodisperse FePt Nanoparticles.
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单分散FePt纳米颗粒的成分分布及铁磁性研究

DOI:
10.1007/s11671-010-9549-6
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发表时间:
2010-02-04
影响因子:
--
通讯作者:
Li, Q.
Li, Q.
中科院分区:
材料科学3区
文献类型:
--
作者:
Wang, H. B.;Wang, H.;Zhang, J.;Yang, F. J.;Xu, Y. M.;Li, Q.

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采用乙酰丙酮铂还原法和五羰基铁热分解法制备了粒径为4.5和6.0 nm的单分散FePt纳米粒子。通过X射线衍射和透射电子显微镜研究了FePt纳米颗粒的晶体结构、尺寸和组成。单个颗粒的能量色散X射线光谱测量表明在4.5和6 nm FePt纳米颗粒中的宽的组成分布。研究了组成分布对FePt纳米颗粒相变和磁性能的影响。
Monodisperse FePt nanoparticles with size of 4.5 and 6.0 nm were prepared by simultaneous reduction of platinum acetylacetonate and thermal decomposition of iron pentacarbonyl in benzylether. The crystallography structure, size, and composition of the FePt nanoparticles were examined by X-ray diffraction and transmission electron microscopy. Energy dispersive X-ray spectrometry measurements of individual particles indicate a broad compositional distribution in both the 4.5 and 6 nm FePt nanoparticles. The effects of compositional distribution on the phase-transition and magnetic properties of the FePt nanoparticles were investigated.
FePt 纳米粒子的单层组装和固定:微观结构和磁性
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