The Effect of Excess PbO on Dielectric and Pyroelectric Properties of Lead Scandium Tantalate Ceramics

$48.00 plus tax (Refund Policy)

Download / Buy Article:

Abstract:

Lead scandium tantalate (PbSc0.5Ta0.5O3, or PST) ceramics with the addition of 0.5–10 wt% excess PbO were fabricated by the hot-pressing method. The percent of perovskite PST and the long-range order parameter S were quantitatively characterized by X-ray diffraction analysis. The grain size was measured by scanning electron microscopy. The dielectric and pyroelectric behavior under dc bias were investigated from −20° to –50°C. The relationships among dielectric constant, Curie temperature, and dc bias were analyzed by fitting to the Gibbs free energy formulas. Based on these data, the pyroelectric figures of merit Fd as a function of field and temperature were calculated, and the highest Fd of 15 × 10−5 Pa−1/2 was obtained under 700 V/mm in the sample with 5 wt% excess PbO.

Document Type: Research Article

DOI: http://dx.doi.org/10.1111/j.1551-2916.2010.03767.x

Affiliations: Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 200050, China

Publication date: September 1, 2010

Related content

Tools

Favourites

Share Content

Access Key

Free Content
Free content
New Content
New content
Open Access Content
Open access content
Subscribed Content
Subscribed content
Free Trial Content
Free trial content
Cookie Policy
X
Cookie Policy
ingentaconnect website makes use of cookies so as to keep track of data that you have filled in. I am Happy with this Find out more