Ferroelectric Behavior and Spectroscopic Properties of La-Modified Lead Titanate Nanoparticles Prepared by a Sol-Gel Method

Mostafa, Massaud; Alrowaili, Z.A.; Rahwan, Gehad; Gerges, M. K.

doi:10.20944/preprints201908.0209.v1

Cited by 1 publication

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“…As the substituent radii Ca 2+ ion is at A site and radii Ti 4+ ion at B site, the tolerance factor calculated values of the CaTiO 3 is 0.972. Hence, the general the structures tend to be in the perovskite structure as the calculated tolerance factor t ∼ 1 [16]. e cubic structure of CaTiO 3 is shown in Figure 5(b), with Ca ions occupying the A site, Ti ions occupying the B site, and O representing the oxygen anion [17][18][19].…”

Section: Resultsmentioning

confidence: 99%

Structural and Optical Properties of Calcium Titanate Prepared from Gypsum

Mostafa

Alrowaili

Shehri

et al. 2022

Journal of Nanotechnology

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Ceramic materials have been used in various human health-related applications for considerable time. One of the important applications of ceramic materials is in electronics. Our work focuses on calcium titanate (CaTiO3). CaTiO3 is typically created via sintering. Gypsum particles is used to form calcium hydroxide, which is then combined with titanium dioxide to form rutile crystals. Thereafter, calcination is performed at 900°C, 1000°C, and 1100°C for 2 h. X-ray diffraction is employed to track the evolution of the CaTiO3 phase. Scanning electron microscopy is used to characterize the morphologies of the different preparation steps. As the calcination temperature increases from 900°C to 1000°C, the crystallite size of CaTiO3 increases from 35 nm to 45 nm. Furthermore, the energy gaps of the CaTiO3 powders obtained after calcination at 900°C and 1000°C are 5.32 eV and 5.43 eV, respectively, and their particle sizes are 150–200 nm and 200–300 nm, respectively.

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