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Dielectric and Pyroelectric Properties of Ferroelectric SBN–PVDF Composites Prepared by Hot‐Uniaxial Press
Author(s) -
Kumar S. Naresh,
Kumar Pawan
Publication year - 2012
Publication title -
international journal of applied ceramic technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.4
H-Index - 57
eISSN - 1744-7402
pISSN - 1546-542X
DOI - 10.1111/j.1744-7402.2012.02808.x
Subject(s) - pyroelectricity , materials science , dielectric , strontium barium niobate , composite material , ferroelectricity , composite number , ceramic , optoelectronics
Composites of polyvinyledene fluoride ( PVDF ) and strontium barium niobate ( Sr x Ba 1− x Nb 2 O 6 for x = 0.53/ SBN )/Ф SBN − (1 − Ф) PVDF with Ф = 0.1 to 0.3 have been prepared by hot uniaxial press. Structural, morphological, dielectric and pyrolectric properties of the composites have been studied. Self‐sustaining thick films with a 0–3 connectivity have been synthesized. The dielectric constant (ε r ) was found to increase with the increase in ceramic volume fraction (Ф) in the composite. The composite with Ф = 0.3 is found to have highest values of pyroelectric coefficient (p i ) ~13.475 μC/m 2 K, FOM I ~0.481 μC/m 2 K and FOM II ~20.13 μC/m 2 K with good mechanical flexibility.