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Pyroelectric signals in (Ba,Ca)TiO3-xBa(Sn,Ti)O3 ceramics: A viable alternative for lead-based ceramics

Sirkanth, K. S. and Patel, Satyanarayan and Steiner, Sebastian and Vaish, Rahul (2018):
Pyroelectric signals in (Ba,Ca)TiO3-xBa(Sn,Ti)O3 ceramics: A viable alternative for lead-based ceramics.
In: Scripta Materialia, Elsevier Science Publishing, pp. 146-149, 146, ISSN 1359-6462, DOI: 10.1016/j.scriptamat.2017.11.027, [Online-Edition: https://doi.org/10.1016/j.scriptamat.2017.11.027],
[Article]

Abstract

(1-x)(Ba0.9Ca0.1)TiO3-xBa(Sn0.2Ti0.8)O3 ceramics x = 0, 0.4, 0.5 and 0.6 were synthesized. With Sn addition, orthorhombic to tetragonal transition temperature increased to higher temperature side and tetragonal to cubic transition temperature reduced towards room temperature for x = 0.4 and x = 0.5 and all phase transitions merged into one for x = 0.6. Multiple heating-cooling cycles' measurement of pyroelectric current was carried out over an excursion of temperature relevant to the pyroelectric applications. The pyroelectric coefficient increased from 1 × 10−4C/m2.K (x = 0) to 2.05 × 10−4C/m2.K (x = 0.4) sample at 303 K. Such enhancements could prove to be advantageous in deriving pyroelectric figures of merit. © 2017 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.

Item Type: Article
Erschienen: 2018
Creators: Sirkanth, K. S. and Patel, Satyanarayan and Steiner, Sebastian and Vaish, Rahul
Title: Pyroelectric signals in (Ba,Ca)TiO3-xBa(Sn,Ti)O3 ceramics: A viable alternative for lead-based ceramics
Language: English
Abstract:

(1-x)(Ba0.9Ca0.1)TiO3-xBa(Sn0.2Ti0.8)O3 ceramics x = 0, 0.4, 0.5 and 0.6 were synthesized. With Sn addition, orthorhombic to tetragonal transition temperature increased to higher temperature side and tetragonal to cubic transition temperature reduced towards room temperature for x = 0.4 and x = 0.5 and all phase transitions merged into one for x = 0.6. Multiple heating-cooling cycles' measurement of pyroelectric current was carried out over an excursion of temperature relevant to the pyroelectric applications. The pyroelectric coefficient increased from 1 × 10−4C/m2.K (x = 0) to 2.05 × 10−4C/m2.K (x = 0.4) sample at 303 K. Such enhancements could prove to be advantageous in deriving pyroelectric figures of merit. © 2017 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.

Journal or Publication Title: Scripta Materialia
Volume: 146
Publisher: Elsevier Science Publishing
Uncontrolled Keywords: Lead-free, Dielectric, Pyroelectric
Divisions: 11 Department of Materials and Earth Sciences
11 Department of Materials and Earth Sciences > Material Science
11 Department of Materials and Earth Sciences > Material Science > Nonmetallic-Inorganic Materials
Date Deposited: 30 Nov 2017 07:42
DOI: 10.1016/j.scriptamat.2017.11.027
Official URL: https://doi.org/10.1016/j.scriptamat.2017.11.027
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