Macrocrystalline niobium monoxide powder has been disintegrated to an average nanoparticle size of 20 ± 10 nm by high-energy milling in a planetary ball mill. X-ray diffraction data showed that, after milling, the particles retained an ordered cubic crystal structure with space group Pm3¯m, containing structural vacancies in both the metallic (25 at %) and nonmetallic (25 at %) sublattices. Analysis of diffraction line broadening as a function of the magnitude of the scattering vector indicated lattice strain anisotropy in the crystallographic directions , , and . According to the diffraction line broadening data, the size of the nanoparticles in the  direction was smaller than those in the  and  directions. The use of surfactants enabled us to obtain a stable suspension of niobium monoxide nanoparticles in water.
Fields of Expertise
- Advanced Materials Science
Treatment code (Nähere Zuordnung)