Pyroelectricity in calcium substituted sodium bismuth titanate layer structured ferroelectric ceramics

Authors
Sastry, PSR Kumar, GS Bhimasankaram, T Prasad, G
Citation
Psr. Sastry et al., Pyroelectricity in calcium substituted sodium bismuth titanate layer structured ferroelectric ceramics, B MATER SCI, 22(1), 1999, pp. 59-64
Citations number
17
Categorie Soggetti
Material Science & Engineering
Journal title
BULLETIN OF MATERIALS SCIENCE
ISSN journal
02504707 → ACNP
Volume
22
Issue
1
Year of publication
1999
Pages
59 - 64
Database
ISI
SICI code
0250-4707(199902)22:1<59:PICSSB>2.0.ZU;2-C
Abstract
Pyroelectric properties of bismuth layer structured calcium substituted sod ium bismuth titanate (Na0.5Bi0.5)(1-x)CaxBi4Ti4O15 with x = 0 (NBT) and x = 0 . 1 (0 . 1 NCBT) were studied by measuring the current under short circu it condition. Spontaneous polarization and figures of merit were evaluated from the measured values of pyroelectric coefficients, dielectric constant and loss tangent. The pyroelectric properties were studied in poled and sho rt circuit condition from 30 degrees C to 700 degrees C. The results obtain ed were discussed in the light of dielectric and conductivity properties of the samples.