微乳液
纳米复合材料
材料科学
纳米颗粒
表征(材料科学)
氧化物
氧化铁纳米粒子
氧化铁
相(物质)
磁性纳米粒子
基质(化学分析)
化学工程
分析化学(期刊)
纳米技术
化学
复合材料
冶金
肺表面活性物质
色谱法
有机化学
工程类
作者
Eider Goikolea,Maite Insausti,Luís Lezama,Izaskun Gil de Muro,J. S. Garitaonandía
标识
DOI:10.1016/j.jnoncrysol.2008.05.083
摘要
In the present paper we report the magnetic characterization of silver-iron oxide nanocomposite obtained by the chemical microemulsion method. TEM images and X-ray diffractograms show that the nanocomposite consists of Ag nanoparticles of ∼ 7 nm surrounded by a quasiamorphous matrix. The ZFC–FC curves and Mössbauer spectra obtained at different temperatures show a typical evolution of a system composed of weakly interacting nanoparticles with a blocking temperature (Tb) of ∼50 K. The analysis of the magnetic data reveals that the matrix is formed by γ-Fe2O3 phase with a structural range order of ∼2 nm.
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