Strontium barium niobate-relating structural developments and dielectric constant

Patro, P.K.; Khatirkar, Rajesh K.; Samajdar, I.; Kulkarni, Ajit R.; Harendranath, C.S.

doi:10.1016/j.jeurceramsoc.2006.08.011

Cited by 10 publications

(4 citation statements)

References 34 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…However, it should be noted that the SBN61 sample in that study had a density that was 95% of the theoretical value. As mentioned above, the densities of the pellets fabricated in the present study were found to be 74% of the theoretical value due to nonoptimized sintering conditions . Thus, significant improvement in the thermoelectric properties is expected upon optimization of the sintering parameters.…”

Section: Resultsmentioning

confidence: 55%

See 1 more Smart Citation

Thermoelectric Properties of Reduced Polycrystalline Sr_0.5Ba_0.5Nb₂O₆ Fabricated Via Solution Combustion Synthesis

et al. 2013

View full text Add to dashboard Cite

The thermoelectric properties of bulk polycrystalline Sr0.5Ba0.5Nb2O6 (SBN50) fabricated via solution combustion synthesis (SCS) and reduced at temperatures of 900°C–1150°C were explored. The Seebeck coefficient (S) of all samples increased over the entire range of testing temperatures; a peak S value of −281 μV/K was obtained at 930 K for the sample reduced at 900°C. A metal‐insulator transition was observed in the electrical conductivity (σ) of samples reduced at 1000°C–1150°C, whereas only semiconducting electrical behavior was observed for the sample reduced at 900°C. An optimal balance between S and σ was achieved for the pellet reduced at 1000°C, which exhibited a maximum power factor of 1.78 μW/cm·K2 at 930 K. Over a temperature range of 300–930 K, the thermal conductivity (κ) of as‐processed and reduced (1000°C) SBN50 was found to be 1.03–1.4 and 1.46–1.84 W/m·K, respectively. A maximum figure of merit (ZT) of 0.09 was obtained at 930 K for the 1000°C‐reduced sample. X‐ray photoelectron spectroscopy revealed that the Nb2+ peak intensity increased at higher reduction temperatures, which could possibly lead to a distortion of NbO6 octahedra and a decrease in the Seebeck coefficient.

show abstract

Section: Resultsmentioning

confidence: 55%

“…Sintered pellets had a diameter of approximately 12.5 mm and a thickness of around 2.5 mm. The density of the sintered pellets, as measured by the Archimedes method, was determined to be ~74% of the theoretical density (5.42 g/cm 3 ) …”

Section: Methodsmentioning

confidence: 99%

Thermoelectric Properties of Reduced Polycrystalline Sr_0.5Ba_0.5Nb₂O₆ Fabricated Via Solution Combustion Synthesis

et al. 2013

View full text Add to dashboard Cite

show abstract

“…SBN has a strong potential for applications in optical data storage, switching and optical computing [1][2][3][4]. Much progress has been made in the growth of SBN single crystals, although the growth technique requires an important investment [5,6].…”

Section: Introductionmentioning

confidence: 99%

Optical properties of Er3+-doped strontium barium niobate nanocrystals obtained by thermal treatment in glass

Haro‐González

Lahoz

González‐Platas

et al. 2008

Journal of Luminescence

View full text Add to dashboard Cite

“…Efforts have been made to obtain high density SBN by hot pressing [8], double stage sintering [5] and using sintering aids [9]. Alternate synthesis methods such as partial co-precipitation [10][11], co-precipitation [12], solution combustion [13], solgel [14] etc. have also been employed to improve its physical, dielectric and microstructural properties.…”

mentioning

confidence: 99%

Electrical properties of ferroelectric Sr0.5Ba0.5Nb2O6 ceramic materials synthesized by different techniques

Kulkarni

Patro

Gupta

et al. 2008

2008 17th IEEE International Symposium on the Applications of Ferroelectrics

View full text Add to dashboard Cite

Strontium Barium Niobate (SrxBal-xNb20 6, abbreviated as SBN) is a promising lead free ferroelectricceramic material. It belongs to the family of tetragonal tungsten bronze structured ferroelectrics. Unlike other family of ferroelectric perovskites such as, PMN and BT where, only one composition gives the ferroelectric phase, SBN exhibits ferroelectricity in the composition range 0 .25~x~0. 75. This in turn, results in a material with different Curie temperatures, microstructures, dielectric and ferroelectric properties. However, the unusual sintering behavior of SBN, leading to abnormal grain growth, duplex microstructure and low density, has plagued commercial exploitation of SBN. We have employed several synthesis methods for example solid-state (conventional as well as microwave sintered), partial coprecipitation and coprecipitation to synthesize SBN of one specific composition (Sro.5Bao.5Nb 2 0 6 ). The different methods resulted in materials having varying microstructure and dielectric properties. For practical application of a ferroelectric material, the ferroelectric properties stand above all other properties due to its wide possible applications in memory and actuators. The main thrust of this paper is on how the ferroelectric properties e.g. Hysteresis, 1-V characteristics, Leakage test and Electrical fatigue behavior vary with different synthesis approaches and the consequent microstructure.

show abstract

Strontium barium niobate-relating structural developments and dielectric constant

Cited by 10 publications

References 34 publications

Thermoelectric Properties of Reduced Polycrystalline Sr_0.5Ba_0.5Nb₂O₆ Fabricated Via Solution Combustion Synthesis

Thermoelectric Properties of Reduced Polycrystalline Sr_0.5Ba_0.5Nb₂O₆ Fabricated Via Solution Combustion Synthesis

Optical properties of Er3+-doped strontium barium niobate nanocrystals obtained by thermal treatment in glass

Electrical properties of ferroelectric Sr0.5Ba0.5Nb2O6 ceramic materials synthesized by different techniques

Contact Info

Product

Resources

About

Strontium barium niobate-relating structural developments and dielectric constant

Cited by 10 publications

References 34 publications

Thermoelectric Properties of Reduced Polycrystalline Sr0.5Ba0.5Nb2O6 Fabricated Via Solution Combustion Synthesis

Thermoelectric Properties of Reduced Polycrystalline Sr0.5Ba0.5Nb2O6 Fabricated Via Solution Combustion Synthesis

Optical properties of Er3+-doped strontium barium niobate nanocrystals obtained by thermal treatment in glass

Electrical properties of ferroelectric Sr0.5Ba0.5Nb2O6 ceramic materials synthesized by different techniques

Contact Info

Product

Resources

About

Thermoelectric Properties of Reduced Polycrystalline Sr_0.5Ba_0.5Nb₂O₆ Fabricated Via Solution Combustion Synthesis

Thermoelectric Properties of Reduced Polycrystalline Sr_0.5Ba_0.5Nb₂O₆ Fabricated Via Solution Combustion Synthesis