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Ferroelectrics Volume 531, 2018 - Issue 1
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Articles

Influence of additives on structure and ferroelectric properties of NBT-BT-BMT ceramics

E. D. PolitovaL.Ya.Karpov Institute of Physical Chemistry, Moscow, Russia; Correspondence[email protected]
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,
N. V. GolubkoL.Ya.Karpov Institute of Physical Chemistry, Moscow, Russia; View further author information
,
A. V. MosunovL.Ya.Karpov Institute of Physical Chemistry, Moscow, Russia; View further author information
,
N. V. SadovskayaL.Ya.Karpov Institute of Physical Chemistry, Moscow, Russia; View further author information
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G. M. KalevaL.Ya.Karpov Institute of Physical Chemistry, Moscow, Russia; View further author information
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D. A. KiselevNational University of Science and Technology “MISiS”, Moscow, RussiaView further author information
&
A. M. KislyukNational University of Science and Technology “MISiS”, Moscow, RussiaView further author information
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Pages 22-30 | Received 31 Oct 2017, Accepted 18 Mar 2018, Published online: 20 Nov 2018
 
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Abstract

Influence of various over stoichiometric additives on phase formation, unit cell parameters, microstructure, dielectric and ferroelectric properties of solid solutions 0.8[0.8(Na0.5Bi0.5)TiO3-0.2BaTiO3]-0.2Bi(Mg0.5Ti0.5)O3 system has been studied.

The unit cell volume slightly decreased in case of the V2O5 additives but did not change in case of Bi2O3, LiF, and KCl additives. Increase in dielectric parameters εrt and tanδrt values at the room temperature was revealed for compositions doped by KCl additives, while these parameters decreased in compositions doped by the V2O5 additives. Linear correlation between piezoelectric coefficient d33 measured for separate grains using the Piezoresponse Force Microscopy method and dielectric permittivity εrt values at the room temperature was confirmed.

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Funding

The work was supported by the Russian Foundation for Basic Research (Grants 15-03-03269, 16-53-48009 and 17-03-00542). CSIR, New Delhi, India

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