Natural Science

Volume 2, Issue 4 (April 2010)

ISSN Print: 2150-4091   ISSN Online: 2150-4105

Google-based Impact Factor: 0.74  Citations  h5-index & Ranking

Effect of Ba2+ in BNT ceramics on dielectric and conductivity properties

HTML  Download Download as PDF (Size: 627KB)  PP. 357-367  
DOI: 10.4236/ns.2010.24043    6,496 Downloads   14,293 Views  Citations

Affiliation(s)

.

ABSTRACT

The polycrystalline (Na0.5Bi0.5)1-xBaxTiO3 (x = 0.026, 0.055 & 0.065) (BNBT) ceramics have been synthesized by conventional solid state sinter-ing technique. The tolerance (t) factor of the BNBT composition have been estimated and found to be 0.988, 0.990 and 0.991 for x = 0.026, 0.055 and 0.065 respectively, revealing system is stable perovskite type structure. The com-pound has a rhombohedral-tetragonal Morphtropic Phase Boun- dary (MPB) at x = 0.065. XRD re-sults indicated the crystalline structure of the investigated materials are of single phase with rhombohedral structure and the average parti-cle size of the calcined powder is found to lie between 45 nm - 60 nm. The effect of Ba2+ on dielectric and conductivity properties in Bis-muth Sodium Titanate (BNT) has been studied. The variation of dielectric constant with fre-quency (45 Hz-5 MHz) and temperature (35℃-590℃) has been performed. The value of Tm and Td are found to decrease with increase of concentration of Barium in BNT. The value of tan in the studied materials is found to be the order of 10-2 indicating low loss materials. The evaluated Curie constant in the composi-tion is found to be the order of 105 revealing the materials belong to oxygen octahedra ferro-electrics. The theoretical dielectric data of the studied composition have been fitted by us- ing Jonscher’s dielectric dispersion relation: . The pre-factor a(T), which indicates the strength of the po-larizability showed a maximum at transition temperature (Tm). The exponent n(T) which gives a large extent of interaction between the charge carriers and polarization is found to be minimum in the vicinity of Tm. The A.C. and d.c conductivity activation energies have been eva- luated; the difference in activation energies could be due to the grain boundary effect. The activation enthalpy energies, have been esti-mated and found to be Hm = 0.37 eV, 0.26 eV and 0.25 eV for BNBT-26, BNBT-55 and BNBT-65 re-spectively.

Share and Cite:

Rao, K. , Rajulu, K. , Tilak, B. and Swathi, A. (2010) Effect of Ba2+ in BNT ceramics on dielectric and conductivity properties. Natural Science, 2, 357-367. doi: 10.4236/ns.2010.24043.

Cited by

[1] Enhanced electrical and energy harvesting performances of lead-free BMT modified BNT piezoelectric ceramics
Journal of Asian Ceramic Societies, 2022
[2] Crystal structure and dielectric properties of the Ca/Y co-substituted BaTiO3
Inorganic Chemistry …, 2022
[3] Structural and modulus spectroscopy studies of Bi0. 5 (Na0. 8K0. 2) 0.5 TiO3 nano-polycrystalline ceramic
Journal of the Australian …, 2022
[4] Enhanced energy-storage properties of La2O3 doped (Na0.5Bi0.5)0.705Ba0.045Sr0.25TiO3 lead-free ferroelectric ceramics
Ferroelectrics, 2022
[5] Influence of calcium titanate on dielectric and ferroelectric properties of lead-free NBT-based composites
Emergent Materials, 2022
[6] Effect of the incorporation of BiFeO3 on the structural, electrical and magnetic properties of the lead-free Bi0. 5Na0. 5TiO3
Mera, S Gaona Jurado… - AIMS Materials …, 2021
[7] Energy harvesting, electrical, and magnetic properties of potassium bismuth titanate-based lead-free ceramics
2021
[8] Effect of rare earth orthoferrite GdFeO3 on the band gap modulation and magnetic switching in Bi0.5Na0.5TiO3 ceramics
2021
[9] Improving Electrical Properties in Lead-Free BNT Based Ceramics by BLT Doping
Integrated Ferroelectrics, 2021
[10] Study of Effect of Y substitution on structural, dielectric, impedance and magnetic properties of Bismuth Ferrite
2020
[11] Dielectric and energy storage properties of Bi2O3-B2O3-SiO2 doped Ba0.85Ca0.15Zr0.1Ti0.9O3 lead-free glass-ceramics
2020
[12] Investigations of structural, enhanced dielectric and magnetic properties of NBT doped ferrite system
2020
[13] Study of effect of Dy substitution on structural, dielectric, impedance and magnetic properties of bismuth ferrite
2020
[14] Synthesis of Various Nanomaterials Used for Fuel Cell Applications
2019
[15] Enhanced energy storage performance of Ba0. 94 (Bi0. 5K0. 5) 0.06 Ti0. 85Zr0. 15O3 relaxor ceramics by two-step sintering method
2019
[16] AJ Csian OURNALOF HEMISTRY AJ Csian OURNALOF HEMISTRY
2019
[17] Hydrothermal Synthesis of Oxide and Carbonate Powders of (1-x)(Na0. 5Bi0. 5) TiO3-xBaTiO3 Ceramics
2019
[18] Structure and electrical properties of (Bi, Na) 0.94 Ba0. 06Ti1-x (Mg1/3Nb2/3) xO3 ceramics
2018
[19] Investigation of Morphotropic Phase Boundary by Rietveld refinement and Raman Spectroscopy for (1-x)(Na0. 5 Bi0. 5) TiO3-xBaTiO3 Ceramics
Asian Journal of …, 2018
[20] Structure and electrical properties of (Bi,Na)0.94Ba0.06Ti1-x(Mg1/3Nb2/3)xO3 ceramics
Processing and Application of Ceramics, 2018
[21] Electrocaloric effect in La-doped BNT-6BT relaxor ferroelectric ceramics
Ceramics International, 2018
[22] Sr2+ doping to enhanced energy-storage properties of (Na0.5Bi0.5)0.94Ba0.06TiO3 lead-free ferroelectric ceramics
Journal of Materials Science: Materials in Electronics, 2018
[23] STRUKTUR MIKRO BAHAN PIEZOELEKTRIK BEBAS TIMBAL TITANAT-BARIUM TITANAT KALIUM NATRIUM NIOBATE HASIL SINTESIS DENGAN METODE …
2018
[24] IMPEDANCE SPECTRA OF SINGLE CRYSTALLINE 0.87 Na0. 5Bi0. 5TiO3-0.13 BaTiO3 SOLID SOLUTIONS
Vìsnik Dnìpropetrovs’kogo unìversitetu, 2017
[25] Crystal structure refinement, enhanced magnetic and dielectric properties of Na0. 5Bi0. 5TiO3 modified Bi0. 8Ba0. 2FeO3 ceramics
Ceramics International, 2017
[26] Study of structural effects on the dielectric and magnetic properties of alkaline earth metals doped SmTiO 3
Materials Research Bulletin, 2017
[27] Multiferroic properties of Indian natural ilmenite
Physics Letters A, 2017
[28] Relaxor Behavior and Dielectric Relaxation in Lead-Free Solid Solutions of (1− x)(Bi0. 5Na0. 5TiO3)–x (SrNb2O6)
Journal of Electronic Materials, 2016
[29] Dielectric, Impedance/Modulus and Conductivity Studies on [Bi 0.5 (Na 1-x K x) 0.5] 0.94 Ba 0.06 TiO 3,(0.16≤ x≤ 0.20) Lead-Free Ceramics
American Journal of Materials Science, 2016
[30] Phase transformation and impedance spectroscopic study of Ba substituted Na 0.5 Bi 0.5 TiO 3 ceramics
Journal of Alloys and Compounds, 2016
[31] Structural, dielectric and impedance characteristics of CoTiO 3
Materials Chemistry and Physics, 2016
[32] Phase transition and tolerance factor relationship of lead-free (Bi 0.5 K 0.5) TiO 3-Bi (Mg 0.5 Ti 0.5) O 3 piezoelectric ceramics
Ceramics International, 2016
[33] Structure and electrical properties of lead-free Bi 0.5 Na 0.5 TiO 3-based ceramics for energy-storage applications
RSC Advances, 2016
[34] Influence of A Site and B Site Doping on the Structural and Electrical Properties of Lead Free Ceramics
2016
[35] Dielectric, Impedance/modulus and conductivity studies on [Bi 0.5(Na 1-x K x) 0.5] 0.94 Ba 0.06 TiO 3,[0.16 x 0.20] leadfree ceramics
2016
[36] Dielectric, impedance/modulus and conductivity studies on [Bi0. 5 (Na1-xKx) 0.5] 0.94Ba0. 06TiO3,(0.16≤ x≤ 0.20) lead-free ceramics
2016
[37] Relaxor Behavior and Dielectric Relaxation in Lead-Free Solid Solutions of (1 − x)(Bi0.5Na0.5TiO3)–x(SrNb2O6)
2016
[38] Impedance, Electrical Conductivity and Piezoelectric Studies on Nb5+ doped (Bi0. 5Na0. 5) 0.94Ba0. 06TiO3–PVDF0–3 composites
2015
[39] Structural and Raman Spectroscopic Study of Antimony Doped Bi0.5Na0.5TiO3 Electroceramic
2015
[40] Dielectric, ac-impedance and modulus spectroscopic studies of nano-crystalline Bi0. 5Na0. 5TiO3 synthesized by using one pot glycine assisted solution combustion …
Journal of Materials Science: Materials in Electronics, 2015
[41] Dielectric response and ac-conductivity studies of Gd 2 O 3-contained K 0.5 Na 0.5 NbO 3 piezoelectric ceramics
Dielectrics and Electrical Insulation, IEEE Transactions on, 2015
[42] Study the Structural and Dielectric Properties of Rare-Earth La Doped (Ba1-xLax)(Ti0. 815Mn0. 0025Nb0. 0025Zr0. 18) 0.995 O3 Ceramics
Integrated Ferroelectrics, 2015
[43] Structural phase stability and electric field induced relaxor–ferroelectric phase transition in (1< i>?< i> x)(Bi< sub> 0.5 Na< sub> 0.5) TiO< sub> 3–< i> x BaTiO< sub> 3 ceramics
Journal of Alloys and Compounds, 2015
[44] Impedance, Electrical Conductivity and Piezoelectric Studies on Nb 5 doped (Bi0. 5Na0. 5) 0.94Ba0. 06TiO3-PVDF 0-3 composites
2015
[45] Structural and Raman Spectroscopic Study of Antimony Doped Bi0. 5Na0. 5TiO3 Electroceramic
Journal of Materials Science and Chemical Engineering, 2015
[46] Dielectric behavior of manganese titanate in the paraelectric phase
Applied Physics A, 2015
[47] Effects of Nb-doping on the micro-structure and dielectric properties of (Bi< sub> 0.5 Na< sub> 0.5) TiO< sub> 3
Ceramics International, 2013
[48] Fabrication, Phase and Microstructural Studies on Chemically Modified La-doped Bismuth Sodium Titanate Ceramics
Ferroelectrics, 2013
[49] Electrical conduction in (Bi0. 5Na0. 5) 0.94 Ba0. 06TiO3-PVDF 0-3 composites by impedance spectroscopy
IOSR Journal of Applied Physics, 2013
[50] Effects of Nb-doping on the micro-structure and dielectric properties of (Bi0. 5Na0. 5) TiO3 ceramics
Ceramics International, 2013
[51] MICROSCOPIC STRUCTURE OF LEAD-FREE PIEZOELECTRIC MATERIALS TITANAT BARIUM TITANAT-KALIUM NATRIUM NIOBATE SYNTHESIZED WITH SOLID STATE REACTION
Jurnal Sains Materi Indonesia, 2012
[52] Dielectric Relaxation Phenomena in Some Lead and Non-lead Based Ferroelectric Relaxor Materials: Recent Advances
Solid State Phenomena, 2012
[53] STRUKTURMIKRO BAHAN PIEZOELEKTRIK BEBAS TIMBAL BISMUTH NATRIUM TITANAT-BARIUM TITANAT-KALIUM NATRIUM NIOBATE HASIL SINTESIS DENGAN METODE REAKSI PADAT
Indonesian Journal of Materials Science, 2012
[54] Ferroelectric relaxor behavior and dielectric spectroscopic study of 0.99 (Bi 0.5 Na 0.5 TiO 3)–0.01 (SrNb 2 O 6) solid solution
Journal of Alloys and Compounds, 2011
[55] Ferroelectric relaxor behavior and dielectric spectroscopic study of 0.99 (Bi0. 5Na0. 5TiO3)–0.01 (SrNb2O6) solid solution
Journal of Alloys and Compounds, 2011

Copyright © 2024 by authors and Scientific Research Publishing Inc.

Creative Commons License

This work and the related PDF file are licensed under a Creative Commons Attribution 4.0 International License.