Тип публикации: статья из журнала
Год издания: 2022
Идентификатор DOI: 10.1134/s0020168522100077
Ключевые слова: nickel oxide, nanoparticles, impedance spectroscopy, dielectric permittivity, inorganic chemistry, Industrial Chemistry/Chemical Engineering, materials science, general
Аннотация: We have studied the influence of the size of nickel oxide nanoparticles on their resistive and capacitive properties. The nanoparticles have been synthesized by vacuum arc deposition and characterized by X-ray diffraction and electron microscopy. The results demonstrate that raising the substrate temperature from 300 to 600 K increПоказать полностьюases the size of the forming nanoparticles from 3.2 to 32.7 nm. The frequency dependences of the ac conductivity, impedance, dielectric permittivity, and dielectric loss tangent of the NiO nanoparticles in the range form 50 Hz to 5 MHz are influenced by their size. In the size range studied, the impedance spectroscopy results we obtained can be interpreted in terms of the relative fraction of interfaces. The transport properties of the 12.1-nm particles differ from those of both the larger and smaller particles, which can be understood in terms of the volume fraction of interparticle boundaries.
Журнал: Inorganic Materials
Выпуск журнала: Т. 58, № 10
Номера страниц: 1043-1050
ISSN журнала: 00201685
Место издания: Moscow
Издатель: Pleiades Publishing, Ltd.