Dielectric Investigations and Theoretical Calculations of Size Effect in Lead Titanate Nanocrystals

Robertas Grigalaitis; Juras Banys; Saulius Lapinskas; Emre Erdem; Rolf Boettcher; H. Juergen Glaesel; Eberhard Hartmann

doi:10.4028/www.scientific.net/MSF.514-516.235

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HomeMaterials Science ForumMaterials Science Forum Vols. 514-516Dielectric Investigations and Theoretical...

Dielectric Investigations and Theoretical Calculations of Size Effect in Lead Titanate Nanocrystals

Abstract:

In this paper the dielectric properties of nanosize ferroelectric lead titanate crystals are presented. The PbTiO3 samples were prepared by pressing nanopowder into the plates and have been studied experimentally by dielectric permittivity measurements in a wide frequency and temperature range. The obtained TC dependence shows a critical change of behavior with increasing of mean nanoparticle size in a 9 nm region. The theoretical calculations based on Monte Carlo simulation were performed to describe such behavior of this material. It was shown that taking into account distribution of nanoparticle sizes in sample is possible to describe dielectric properties of PbTiO3 nanocrystals rather well.

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Materials Science Forum (Volumes 514-516)

Pages:

235-239

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.514-516.235

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Online since:

May 2006

Authors:

Robertas Grigalaitis, Juras Banys, Saulius Lapinskas, Emre Erdem, Rolf Boettcher, H. Juergen Glaesel, Eberhard Hartmann

Keywords:

Monte-Carlo Simulation, Nanoferroelectric, Size Distribution

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