Dielectric spectroscopy and ferroelectric properties of magnesium modified bismuth titanate ceramics

Oroosa Subohi, Chris R. Bowen, M. M. Malik, Rajnish Kurchania

Research output: Contribution to journalArticle

11 Citations (Scopus)

Abstract

Mg doped bismuth titanate ceramics Bi4Ti3-xMgxO12 (x = 0.2, 0.4, 0.6) (BMgT) synthesized using a solution combustion technique are studied in this paper. This work examines the effect of Mg doping at B site of bismuth titanate on its crystalline structure, ferroelectric properties and electrical conduction characteristics over a broad temperature range. Addition of Mg2+ does affect the lattice symmetry of bismuth titanate by causing shrinkage in the unit cell. An increase in the dielectric constant and decrease in loss tangent is observed due to increase in magnesium content. The Nyquist plots are interpreted using a RC model which explains the contribution of the grain-bulk and the grain boundary resistivities to the total resistivity of the materials. The P-E loops are observed to become lossier with an increase in magnesium content due to increase in leakage current as a result of lattice distortion introduced in the unit cell.

LanguageEnglish
Pages27-36
Number of pages10
JournalJournal of Alloys and Compounds
Volume688
Issue numberPart B
DOIs
StatusPublished - 15 Dec 2016

Fingerprint

Dielectric spectroscopy
Bismuth
Magnesium
Ferroelectric materials
Leakage currents
Grain boundaries
Permittivity
Doping (additives)
Crystalline materials
bismuth titanate
Temperature

Keywords

  • Ceramics
  • Dielectric properties
  • Electrical properties
  • Ferroelectricity

Cite this

Dielectric spectroscopy and ferroelectric properties of magnesium modified bismuth titanate ceramics. / Subohi, Oroosa; Bowen, Chris R.; Malik, M. M.; Kurchania, Rajnish.

In: Journal of Alloys and Compounds, Vol. 688, No. Part B, 15.12.2016, p. 27-36.

Research output: Contribution to journalArticle

Subohi, Oroosa ; Bowen, Chris R. ; Malik, M. M. ; Kurchania, Rajnish. / Dielectric spectroscopy and ferroelectric properties of magnesium modified bismuth titanate ceramics. In: Journal of Alloys and Compounds. 2016 ; Vol. 688, No. Part B. pp. 27-36.
@article{9004cbcda3784e72ad8822777a9ceb61,
title = "Dielectric spectroscopy and ferroelectric properties of magnesium modified bismuth titanate ceramics",
abstract = "Mg doped bismuth titanate ceramics Bi4Ti3-xMgxO12 (x = 0.2, 0.4, 0.6) (BMgT) synthesized using a solution combustion technique are studied in this paper. This work examines the effect of Mg doping at B site of bismuth titanate on its crystalline structure, ferroelectric properties and electrical conduction characteristics over a broad temperature range. Addition of Mg2+ does affect the lattice symmetry of bismuth titanate by causing shrinkage in the unit cell. An increase in the dielectric constant and decrease in loss tangent is observed due to increase in magnesium content. The Nyquist plots are interpreted using a RC model which explains the contribution of the grain-bulk and the grain boundary resistivities to the total resistivity of the materials. The P-E loops are observed to become lossier with an increase in magnesium content due to increase in leakage current as a result of lattice distortion introduced in the unit cell.",
keywords = "Ceramics, Dielectric properties, Electrical properties, Ferroelectricity",
author = "Oroosa Subohi and Bowen, {Chris R.} and Malik, {M. M.} and Rajnish Kurchania",
year = "2016",
month = "12",
day = "15",
doi = "10.1016/j.jallcom.2016.07.173",
language = "English",
volume = "688",
pages = "27--36",
journal = "Journal of Alloys and Compounds",
issn = "0925-8388",
publisher = "Elsevier",
number = "Part B",

}

TY - JOUR

T1 - Dielectric spectroscopy and ferroelectric properties of magnesium modified bismuth titanate ceramics

AU - Subohi, Oroosa

AU - Bowen, Chris R.

AU - Malik, M. M.

AU - Kurchania, Rajnish

PY - 2016/12/15

Y1 - 2016/12/15

N2 - Mg doped bismuth titanate ceramics Bi4Ti3-xMgxO12 (x = 0.2, 0.4, 0.6) (BMgT) synthesized using a solution combustion technique are studied in this paper. This work examines the effect of Mg doping at B site of bismuth titanate on its crystalline structure, ferroelectric properties and electrical conduction characteristics over a broad temperature range. Addition of Mg2+ does affect the lattice symmetry of bismuth titanate by causing shrinkage in the unit cell. An increase in the dielectric constant and decrease in loss tangent is observed due to increase in magnesium content. The Nyquist plots are interpreted using a RC model which explains the contribution of the grain-bulk and the grain boundary resistivities to the total resistivity of the materials. The P-E loops are observed to become lossier with an increase in magnesium content due to increase in leakage current as a result of lattice distortion introduced in the unit cell.

AB - Mg doped bismuth titanate ceramics Bi4Ti3-xMgxO12 (x = 0.2, 0.4, 0.6) (BMgT) synthesized using a solution combustion technique are studied in this paper. This work examines the effect of Mg doping at B site of bismuth titanate on its crystalline structure, ferroelectric properties and electrical conduction characteristics over a broad temperature range. Addition of Mg2+ does affect the lattice symmetry of bismuth titanate by causing shrinkage in the unit cell. An increase in the dielectric constant and decrease in loss tangent is observed due to increase in magnesium content. The Nyquist plots are interpreted using a RC model which explains the contribution of the grain-bulk and the grain boundary resistivities to the total resistivity of the materials. The P-E loops are observed to become lossier with an increase in magnesium content due to increase in leakage current as a result of lattice distortion introduced in the unit cell.

KW - Ceramics

KW - Dielectric properties

KW - Electrical properties

KW - Ferroelectricity

UR - http://www.scopus.com/inward/record.url?scp=84978829770&partnerID=8YFLogxK

UR - http://dx.doi.org/10.1016/j.jallcom.2016.07.173

U2 - 10.1016/j.jallcom.2016.07.173

DO - 10.1016/j.jallcom.2016.07.173

M3 - Article

VL - 688

SP - 27

EP - 36

JO - Journal of Alloys and Compounds

T2 - Journal of Alloys and Compounds

JF - Journal of Alloys and Compounds

SN - 0925-8388

IS - Part B

ER -