skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Effect of La-substitution on the structure, dielectric and ferroelectric properties of Nb modified SrBi{sub 8}Ti{sub 7}O{sub 27} ceramics

Abstract

Graphical abstract: The ferroelectric properties of Nb modified Bi{sub 4}Ti{sub 3}O{sub 12}–SrBi{sub 4}Ti{sub 4}O{sub 15} intergrowth ceramics increases significantly when Bi is substituted by La. - Highlights: • La{sup 3+} substitution for Bi{sup 3+} in Nb doped Bi{sub 4}Ti{sub 3}O{sub 12}–SrBi{sub 4}Ti{sub 4}O{sub 15} ferroelectrics is reported. • The orthorhombic distortion of the structure decreased with the increasing La. • La acts as a grain growth inhibitor in the ceramics. • The remnant polarization of the ferroelectrics increased significantly with La substitution. - Abstract: The effect of La substitution on the electrical properties of SrLa{sub x}Bi{sub 8−x}Ti{sub 6.88}Nb{sub 0}.{sub 12}O{sub 27} intergrowth Aurivillius phase ferroelectric ceramic was investigated. La content ‘x’ was ranging from 0.0 to 1.0 in a step of 0.2. The ceramic phase was synthesized through a modified oxalate route. X-ray diffraction was used to identify the phase and to investigate the change in lattice parameter and microstrain with the substitution. La-substitution does not affect the crystal structure of the intergrowth. Microstructural investigation revealed that the grain size of the ceramic decreases with La addition. The lattice parameters and orthorhombicity of intergrowth structure were found to decrease with increasing La substitution. The temperature dependence of dielectric behavior wasmore » investigated in the temperature range 30–700 °C and the frequency of 100 kHz. The remnant polarization 2P{sub r} increased and the Curie temperature T{sub c} decreased with the increase in the La substitution.« less

Authors:
Publication Date:
OSTI Identifier:
22475841
Resource Type:
Journal Article
Journal Name:
Materials Research Bulletin
Additional Journal Information:
Journal Volume: 68; Other Information: Copyright (c) 2015 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 0025-5408
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; BISMUTH COMPOUNDS; CERAMICS; CURIE POINT; DIELECTRIC PROPERTIES; DOPED MATERIALS; FERROELECTRIC MATERIALS; GRAIN GROWTH; GRAIN SIZE; LANTHANUM ADDITIONS; LATTICE PARAMETERS; NIOBIUM ADDITIONS; ORTHORHOMBIC LATTICES; OXALATES; POLARIZATION; STRONTIUM COMPOUNDS; TEMPERATURE DEPENDENCE; TITANATES; X-RAY DIFFRACTION

Citation Formats

Parida, Geetanjali, and Bera, J., E-mail: jbera@nitrkl.ac.in. Effect of La-substitution on the structure, dielectric and ferroelectric properties of Nb modified SrBi{sub 8}Ti{sub 7}O{sub 27} ceramics. United States: N. p., 2015. Web. doi:10.1016/J.MATERRESBULL.2015.03.059.
Parida, Geetanjali, & Bera, J., E-mail: jbera@nitrkl.ac.in. Effect of La-substitution on the structure, dielectric and ferroelectric properties of Nb modified SrBi{sub 8}Ti{sub 7}O{sub 27} ceramics. United States. https://doi.org/10.1016/J.MATERRESBULL.2015.03.059
Parida, Geetanjali, and Bera, J., E-mail: jbera@nitrkl.ac.in. 2015. "Effect of La-substitution on the structure, dielectric and ferroelectric properties of Nb modified SrBi{sub 8}Ti{sub 7}O{sub 27} ceramics". United States. https://doi.org/10.1016/J.MATERRESBULL.2015.03.059.
@article{osti_22475841,
title = {Effect of La-substitution on the structure, dielectric and ferroelectric properties of Nb modified SrBi{sub 8}Ti{sub 7}O{sub 27} ceramics},
author = {Parida, Geetanjali and Bera, J., E-mail: jbera@nitrkl.ac.in},
abstractNote = {Graphical abstract: The ferroelectric properties of Nb modified Bi{sub 4}Ti{sub 3}O{sub 12}–SrBi{sub 4}Ti{sub 4}O{sub 15} intergrowth ceramics increases significantly when Bi is substituted by La. - Highlights: • La{sup 3+} substitution for Bi{sup 3+} in Nb doped Bi{sub 4}Ti{sub 3}O{sub 12}–SrBi{sub 4}Ti{sub 4}O{sub 15} ferroelectrics is reported. • The orthorhombic distortion of the structure decreased with the increasing La. • La acts as a grain growth inhibitor in the ceramics. • The remnant polarization of the ferroelectrics increased significantly with La substitution. - Abstract: The effect of La substitution on the electrical properties of SrLa{sub x}Bi{sub 8−x}Ti{sub 6.88}Nb{sub 0}.{sub 12}O{sub 27} intergrowth Aurivillius phase ferroelectric ceramic was investigated. La content ‘x’ was ranging from 0.0 to 1.0 in a step of 0.2. The ceramic phase was synthesized through a modified oxalate route. X-ray diffraction was used to identify the phase and to investigate the change in lattice parameter and microstrain with the substitution. La-substitution does not affect the crystal structure of the intergrowth. Microstructural investigation revealed that the grain size of the ceramic decreases with La addition. The lattice parameters and orthorhombicity of intergrowth structure were found to decrease with increasing La substitution. The temperature dependence of dielectric behavior was investigated in the temperature range 30–700 °C and the frequency of 100 kHz. The remnant polarization 2P{sub r} increased and the Curie temperature T{sub c} decreased with the increase in the La substitution.},
doi = {10.1016/J.MATERRESBULL.2015.03.059},
url = {https://www.osti.gov/biblio/22475841}, journal = {Materials Research Bulletin},
issn = {0025-5408},
number = ,
volume = 68,
place = {United States},
year = {Sat Aug 15 00:00:00 EDT 2015},
month = {Sat Aug 15 00:00:00 EDT 2015}
}