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Ferroelectrics Volume 516, 2017 - Issue 1: The 10th Asian Meeting on Ferroelectrics (AMF-10), Part I
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Original Articles

Electric field induced weak ferroelectricity in Ba0.70Sr0.30TiO3, ceramics capacitors

Venkata Sreenivas PuliDepartment of Physics, University of Puerto Rico, San Juan, Puerto Rico, USA;Department of Physics and Engineering Physics, Tulane University, New Orleans, Louisiana, USACorrespondence[email protected]
ORCID Iconhttp://orcid.org/0000-0002-2074-0036
ORCID Icon,
Dhiren K. PradhanDepartment of Physics, University of Puerto Rico, San Juan, Puerto Rico, USA
,
Shiva AdireddyDepartment of Physics and Engineering Physics, Tulane University, New Orleans, Louisiana, USA
,
Douglas B. ChriseyDepartment of Physics and Engineering Physics, Tulane University, New Orleans, Louisiana, USA
&
Ram S. KatiyarDepartment of Physics, University of Puerto Rico, San Juan, Puerto Rico, USA
Pages 133-139 | Received 07 Nov 2016, Accepted 06 Jun 2017, Published online: 07 Nov 2017
 
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ABSTRACT

Ba0.70Sr0.30TiO3-(BST) ceramics were fabricated by conventional mixed oxide route. The structural phase transition, ferroelectric, dielectric and energy storage properties of BST ceramics capacitors were investigated. Electric field induced weak ferroelectricity is observed for BST ceramics. Temperature dependent dielectric property measurements of BST solid-solutions have shown a high dielectric constant and low dielectric loss. Room temperature breakdown field strength and energy densities were obtained from P-E loops. The recoverable energy density is 0.17 J/cm3 with dielectric breakdown strength as high as 150 kV/cm. BST ceramics have shown interesting energy densities; these might be the strong candidate materials for capacitor applications.

Funding

This work was supported by the NSF-EFRI Award # 1038272 grant.

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