13308-40-2Relevant academic research and scientific papers
Chemical solution deposited thin films of titanium, chromium, zirconium, and tin oxides
Abyzov
, p. 1082 - 1088 (2017)
TiO2, Cr2O3, ZrO2, and SnO2 films with thicknesses of ～10–100 nm were produced via dipping into solution and subsequent annealing in air. The films were studied by the methods of scanning electron microscopy, elemental X-ray spectral analysis, optical spectroscopy, and X-ray diffraction. The electrical conductivity of the films in air and in a vacuum was measured. The adhesion of most of the films to the substrate was found to be high. A crystalline structure was observed for films thicker than 10 nm. The films have a specific surface resistance of 108–1012 Ω in air and 109–1014 Ω in a vacuum. The films are promising as coatings for various purposes, including the development of structures of the core–shell type.
Colloidal synthesis and magnetic properties of anisotropic-shaped spinel CuCr2Se4 nanocrystals
Pang, Chao,Yang, Ruiqiang,Singh, Amit,Chen, Hanjiao,Bowman, Michael K.,Bao, Ningzhong,Shen, Liming,Gupta, Arunava
, p. 31173 - 31179 (2017/07/10)
Anisotropic-shaped CuCr2Se4 nanocrystals have been synthesized by thermal decomposition and reaction of novel mixed metal-oleate complexes with selenium in a high-boiling point organic solvent, trioctylamine (TOA). The synthesized CuCr2Se4 nanocrystals exhibit close to triangular and hexagonal morphology, with an average size of 20 nm. X-ray diffraction patterns and XPS spectral analysis confirm the formation of the pure spinel phase without any impurities. A possible reaction mechanism is suggested and formation pathways for the triangular and hexagonal shaped CuCr2Se4 nanocrystals are proposed. Magnetic studies indicate that the anisotropic-shaped CuCr2Se4 nanocrystals are superparamagnetic near room temperature but exhibit ferromagnetic behavior at lower temperatures, with magnetization values of 31 and 43 emu g-1 at 300 and 5 K, respectively.
