Volume 32, Issue 1 (4-2024)
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khorrami G, Mousavi M, Alinejadmofrad M. Investigation of physical properties of pure and Ba-doped lead zirconate titanate, synthesized by Sol-gel combustion. www.ijcm.ir 2024; 32 (1) :161-170
URL: http://ijcm.ir/article-1-1844-en.html
URL: http://ijcm.ir/article-1-1844-en.html
1- Physics Department, Faculty of Basic Science, University of Bojnord, Bojnord, North Khorasan
2- Mathematics Department, Faculty of Basic Science, University of Bojnord, Bojnord, North Khorasan
2- Mathematics Department, Faculty of Basic Science, University of Bojnord, Bojnord, North Khorasan
Abstract: (1103 Views)
In this research, pure and Ba-doped lead zirconate titanate nanopowders were synthesized by sol-gel combustion in order to investigate their structural, optical and electrical properties. The results of the structural investigations showed that the samples have a tetragonal crystal structure with the crystallite size of about 20 to 30 nm. Cohen's method and size-strain diagram were used to calculate the lattice constants and the average size of nanocrystals, respectively. Transmission electron microscope was used to determine the size and shape of nanoparticles. Optical properties of prepared samples were studied using Kramers-Kronig relations and FTIR technique. The band gap of the samples was obtained about 3.5 eV using Kubelka-Munk equation. Dielectric constant of pure and Ba-doped samples was obtained 1050 and 570 at frequency of 100 Hz, respectively. SEM image showed the grain size of pure samples is about 2 to 3 μm.
Keywords: Lead zirconate titanate, nanoparticles, Sol-gel combustion, Cohen method, Kramers-Kronig relations.
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