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Structural, dielectric and pyroelectric studies of Pb1−XCaXTiO3 thin films

✍ Scribed by Sonalee Chopra; Seema Sharma; T.C. Goel; R.G. Mendiratta

Publisher
Elsevier Science
Year
2003
Tongue
English
Weight
171 KB
Volume
127
Category
Article
ISSN
0038-1098

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✦ Synopsis

Thin films of Pb 12x Ca x TiO 3 [x ¼ 0:20; 0.24 and 0.28] have been prepared on ITO coated Corning glass substrates by sol gel technique. The perovskite phase of PCT films is formed at 650 8C with a polycrystalline tetragonal structure. The tetragonal factor ðc=aÞ decreases with increasing Ca concentration. Dielectric, pyroelectric and ferroelectric studies have been carried out on these films. The effects of introduction of Ca ion in PbTiO 3 have also been discussed.

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## Abstract This work emphasizes the use of vinylidene fluoride and trifluoroethylene copolymer P(VDF‐TrFE) as a pyroelectric sensor. The pyroelectric and dielectric properties of the copolymer have been investigated in the temperature interval 150–350 K. The samples were prepared by using a spin‐c