Structural and dielectric studies of MgAl2O4–TiO2 composites for energy storage applications. Issue 21 (1st November 2021)

• Record Type: Journal Article
• Authors: Ullah, Farman; Qureshi, Muhammad Tauseef; Sultana, Kishwar; Saleem, Murtaza; Al Elaimi, Mahmoud; Abdel Hameed, Reda; Haq, Siraj ul; Ismail, Hussin Shafey; Anwar, Muhammad Sabieh
• Is Part Of: Ceramics international. Volume 47:Issue 21(2021)
• Page Start: 30665
• Page End: 30670
• Publication Date: 2021-11-01
• Subjects: Composite -- Structure -- Dielectric -- Ferroelectric; Ceramics -- Periodicals; Céramique industrielle -- Périodiques; Ceramics; Periodicals; Electronic journals; 666
• DOI: 10.1016/j.ceramint.2021.07.244
• Languages: English
• ISSNs: 0272-8842

Abstract

Abstract: Nanostructured MgAl2 O4 and TiO2 were successfully synthesized in phase pure form using well know co-precipitation method. The composites of MgAl2 O4 with various concentrations of TiO2 (5 %, 10 %, 20 %, and 50 %) were prepared by vertexing technique. The pure crystal phase of both TiO2 and MgAl2 O4 have hexagonal and spinel crystal structures, respectively as confirmed from x-rays diffraction analysis. The sheet-like morphology with some agglomeration was shown for pure MgAl2 O4 and spherical for TiO2 with clear boundaries are obtained from FESEM micrographs. Energy dispersive x-rays confirmed the presence of expected elements in corresponding percentages in all compositions. These compositions present enhanced ferroelectric and dielectric responses in synthesized composite materials. The improvement in saturation polarization P s, electric-remanence polarization P r, and the electric-coercivity E c parameters confirm that these can be used as a good dielectric medium and can consider highly efficient material for energy storage device applications.