Shape Anisotropy of Magnetic Nanoparticles in (Co86Nb12Ta2) x (SiO2)1−x Composite Films Revealed by Grazing-Incidence Small-Angle X-Ray Scattering

Авторы:
V. Ukleev
Авторы из ОИКС:
Год публикации:
2018
Журнал:
Journal of Superconductivity and Novel Magnetism N 7 vol. 31 2099–2102
Абстракт:

Structure of amorphous nangranular composite (Co86Nb12Ta2) x (SiO2)1−x films was studied by means of grazing-incidence small-angle X-ray scattering as a function of atomic concentration x of the metal fraction in vicinity of the percolation threshold. It has been established that the average size of magnetic nanoparticles increases with x and this increment exhibit the anisotropic character. It was found that in a whole concentration range the particles are elongated along the growth direction perpendicular to the film plane. For the lowest concentration x = 0.193, clusters with isotropic shape and average radius of 1 nm were observed, while for higher concentrations up to x = 0.665, the average cluster length along the film normal is 1.5–7 nm and the cross-section is 1–2 nm.

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