Departamento de Física Aplicada, Universidad Autónoma de Madrid, Cantoblanco, Madrid 28049, Spain.
Nanoscale Res Lett. 2012 Sep 2;7(1):495. doi: 10.1186/1556-276X-7-495.
In the present work, the characterization of cobalt-porous silicon (Co-PSi) hybrid systems is performed by a combination of magnetic, spectroscopic, and structural techniques. The Co-PSi structures are composed by a columnar matrix of PSi with Co nanoparticles embedded inside, as determined by Transmission Electron Microscopy (TEM). The oxidation state, crystalline structure, and magnetic behavior are determined by X-Ray Absorption Spectroscopy (XAS) and Alternating Gradient Field Magnetometry (AGFM). Additionally, the Co concentration profile inside the matrix has been studied by Rutherford Backscattering Spectroscopy (RBS). It is concluded that the PSi matrix can be tailored to provide the Co nanoparticles with extra protection against oxidation.
在本工作中，通过磁学、光谱和结构技术的组合，对钴-多孔硅（Co-PSi）混合系统进行了表征。Co-PSi 结构由具有 Co 纳米粒子嵌入其中的 PSi 柱状矩阵组成，这是通过透射电子显微镜（TEM）确定的。通过 X 射线吸收光谱（XAS）和交变梯度磁场磁强计（AGFM）确定了氧化态、晶体结构和磁行为。此外，还通过卢瑟福背散射光谱（RBS）研究了基质中 Co 浓度分布。得出的结论是，PSi 基质可以进行定制，为 Co 纳米粒子提供额外的抗氧化保护。
