Investigation on the structural properties in Er-doped PbTiO3 compounds: A correlation between experimental and theoretical results

“…Many publications are related to the preparation and study of Zirconium doped PT (Lead zirconate PZT) [9], or PbTiO 3 powders co-doped with iron and lanthanide elements (PLFT) [10], or more recently, Er doped PT [11], but, to our knowledge, no publication have been devoted to the study of Mg-doped PT. The present work tries to remedy this deficiency and deals with the preparation and characterization of PT:Mg powder with different concentrations of Mg.…”

Section: +mentioning

confidence: 99%

Synthesis and characterization of magnesium doped lead titanate

Fadil

Lamcharfi

Abdi

et al. 2011

Cryst. Res. Technol.

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Magnesium (Mg) doped lead titanate powders (PT: Mg) ceramics, with various Mg contents (0, 2.5, 5, 7.5, 10, 12.5, 15, 17.5, 20, and 30 mol%), are prepared by the sol-gel method and characterized by X-Ray diffraction (XRD), scanning electron microscopy (SEM) and Raman spectroscopy. XRD results show that the magnesium diminishes the lattice tetragonality of PT:Mg. The average particle size and morphology were studied by SEM. The investigations done by Raman spectroscopy allow the analyzis of the substitution mechanism behavior related to the Mg incorporation into PT structure. A concentration threshold appears around 10% of Mg corresponding in a change of the compensation process with Mg 2+ ions replacing Pb 2+ions below and both Pb 2+ and Ti 4+ above.

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“…It is also dependent on the displacement of the BO 6 octahedron relative to Pb atoms [23][24]. It has a direct relation to the order parameter.…”

Section: Resultsmentioning

confidence: 99%

Structural and dielectric properties of Pb(1−x)(Na0.5Sm0.5) x TiO3 ceramics

Yadav

Anita

Kumar

et al. 2017

J Mater Sci: Mater Electron

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Abstract:A correlation between structure and vibrational properties related to a ferroelectric to paraelectric phase transition in perovskite Pb (1-x) (Na 0.5 Sm 0.5 ) x TiO 3 (0≤x≤0.5) (PNST-x) polycrystalline powders is discussed. Substitution leads to reduction of tetragonality which is associated with a shift of the phase transition to lower temperatures. The nature of the phase transition gets diffused with increasing substitution.Keywords: Structural properties, Raman spectroscopy, Dielectric, Phase transition. IntroductionPbTiO 3 is known to be a strong ferroelectric perovskite compound. A structural phase transition from tetragonal (P4mm) to cubic (Pm3m) phase at 763K is observed in PbTiO 3 . Tetragonality, measured by c/a ratio is frequently related to ferroelectric properties. For PbTiO 3 , c/a ratio is ~1.06 at room temperature [1][2][3][4][5]. Properly substituted PbTiO 3 has different applications as capacitors, nonvolatile memories, ultrasonic transducers, pyroelectric infrared sensors, piezoelectric actuators due to their highly anisotropic nature of elastic, piezoelectric, and electro-optic properties etc. [6][7][8].Physical properties and device applications of ferroelectric perovskite (ABO 3 ) compounds like PbTiO 3 and BaTiO 3 have been studied extensively due to their technological importance. Based on the fact that PbTiO 3 is toxic and volatile in nature and not environmental friendly many reduced lead content ferroelectric materials has been investigated, such as

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Investigation on the structural properties in Er-doped PbTiO3 compounds: A correlation between experimental and theoretical results

Cited by 36 publications

References 40 publications

Synthesis and photoluminescence behavior of Bi4Ti3O12 powders obtained by the complex polymerization method

Synthesis and photoluminescence behavior of Bi4Ti3O12 powders obtained by the complex polymerization method

Synthesis and characterization of magnesium doped lead titanate

Structural and dielectric properties of Pb(1−x)(Na0.5Sm0.5) x TiO3 ceramics

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