Role of internal stress on dielectric and dc bias field-induced pyroelectric properties of Ba0.68Sr0.32TiO3-(Ba0.68Sr0.32)2TiO4 for uncooled infrared detectors

ZHANG Guangzu; YI Jinqiao; JIANG Shenglin; YU Yan; HE Jungang; LIU Sisi; ZHU Dingyang; ZHANG Ling

Chinese︱Feedback︱Save this page

• Elaborating Academic Views 　　　　 • Exchanging Innovative Ideas
• Protecting Intellectual Properties 　　• Fast Sharing Science Papers

Sponsored by the Center for Science and Technology Development of the Ministry of Education
Supervised by Ministry of Education of the People's Republic of China

Home > Papers

Role of internal stress on dielectric and dc bias field-induced pyroelectric properties of Ba0.68Sr0.32TiO3-(Ba0.68Sr0.32)2TiO4 for uncooled infrared detectors

ZHANG Guangzu #,YI Jinqiao *,JIANG Shenglin,YU Yan,HE Jungang,LIU Sisi,ZHU Dingyang,ZHANG Ling

School of Optical and Electronic Information, Huazhong University of Science and Technology, Wuhan 430074, China

*Correspondence author

#Submitted by

Subject:

Funding: 博士点基金（No.20110142120074）

Opened online:21 May 2013

Accepted by: none

Citation: ZHANG Guangzu,YI Jinqiao,JIANG Shenglin.Role of internal stress on dielectric and dc bias field-induced pyroelectric properties of Ba0.68Sr0.32TiO3-(Ba0.68Sr0.32)2TiO4 for uncooled infrared detectors[OL]. [21 May 2013] http://en.paper.edu.cn/en_releasepaper/content/4543223

Ba0.68Sr0.32TiO3-(Ba0.68Sr0.32)2TiO4 ceramic were fabricated by the solid-state reaction process, and the microstructural, dielectric, and pyroelectric properties were systemically investigated. In Ba0.68Sr0.32TiO3 ceramics with slight Ba/Sr-excess composition, (Ba0.68Sr0.32)2TiO4 second-phase was found in the center of Ba0.68Sr0.32TiO3 grains and the "core-shell" grain structure was formed. Compared with Ba0.68Sr0.32TiO3 ceramic, Ba0.68Sr0.32TiO3-(Ba0.68Sr0.32)2TiO4 with "core-shell" grain structure exhibited steeper dielectric constant slope, sharper dielectric constant peak and approximately 50% higher dc bias field-induced pyroelectric coefficient. The factors affecting the dielectric and pyroelectric properties anomaly were discussed from a viewpoint of thermal stress effect. The high stress due to the thermal mismatch with the (Ba0.68Sr0.32)2TiO4 second-phases resulted in the change of dielectric properties and the increase of pyroelectric coefficient. The improvement of pyroelectric property would be very useful for the development of BST dielectric bolometer.

Keywords:BST ceramic; Internal stress; Core-shell grain structure; Dielectric property; Dc bias field-induced pyroelectric property

For this paper

● PDF (0B)
● Revision 0 　　
● Print this paper
● Recommend this paper to a friend
● Add to my favorite list

Saved Papers

Please enter a name for this paper to be shown in your personalized Saved Papers list

Tags

Add yours

Related Papers

Other similar papers
● Enhanced dielectric and ...

Statistics

PDF Downloaded	386
Bookmarked	0
Recommend	5
Comments	Array

Submit your papers

Alert Name:
Alerting to:
Authentication email will be sent to your email address in 24 hours
Frequency:
Email Message Format:	Plain text Graphical(HTML)

Complete the form below and we will recommend the selected titles to your friends on your behalf. * Indicates a required field.
Your name*:
Your email address*:
Recipient's name*:
Recipient's email address*:
(multiple recipient's names and email addresses should be separated with semicolons)
Your comments:	I thought you would find the page(s) useful.

Your name:
Your email address:
Recipient's name:
Recipient's email address:
(multiple recipient's names and email addresses should be separated with semicolons)
Your comments:	I thought you would find this page useful.

Disclaimer: This message was sent to your friend using the "Send it to a friend" facility on the Sciencepaper Online’ WWW site, http://www.paper.edu.cn/en. The Sciencepaper Online is not responsible for the content of this email, and anything said in this email does not necessarily reflect the Sciencepaper Online's views.

	Check out RSS, or use RSS reader to subscribe this item

Saved Papers