Structural, Conductivity, and Dielectric Properties of Nickel Oxide and Copper (Cu) or Chromium (Cr) Doped Nickel Oxide Nanoparticles [post]

Ali Bashal, Tarob A Abdel Baset, Mostafa Abboudi, Hamza Qasem, Fahd Al-Wadaani
2021 unpublished
In this study, NiO NPs and doped NiO NPs were prepared in a two-step process and they were analyzed by scanning electron microscopy, transmission electron microscopy, X-ray diffraction, and nitrogen adsorption desorption. X-ray diffraction outcome clarified that all the patterns present the similar peaks that are attributed to the cubic variety of the NiO and all doping metals could be inserted into the NiO structure. TEM result showed that the NiO NPs are assembled side by side and aligned
more » ... g the same direction to form small array shaped nano-agglomerates of 500 nm in length and 50–70 nm in diameter. Adsorption-desorption isotherms for N2 showed that NiO NPs represents type IV isotherms containing a hysteresis loop at relative pressure between 0.5 and 1.0. Hysteresis loop's shape was of H2 type which is characteristic of inckbottle shaped pores. It was also in the shape of solids composed by small spherical particles. The dielectric properties and electrical conductivity for these samples were also studied within the temperature range 25oC – 110oC and within the frequency range 100 Hz to 0.3 MHz.
doi:10.21203/rs.3.rs-415150/v1 fatcat:w6jx4zpi6zdjndbjmojooom6bi