TY - JOUR
T1 - Effects of Uniaxial Compaction Pressure on the Dielectric Properties of B a T i O3/Polyvinylidene Fluoride Composites
AU - Hsiang, Hsing I.
AU - Yen, Fu Su Yen
PY - 1994/7
Y1 - 1994/7
N2 - In this study, the formation of internal stress, domain switching, phase transition, and dielectric property variations of BaTiO3 particles in the BaTiO3-PVDF composites are investigated. It is found that the characteristics of the composite are highly affected by the magnitude of the compaction pressure employed. The internal stress may change from a state of compressive to tensile as the pressure increases. This is characterized by domain switching, in which the c axis rotates 90°, leaning from perpendicular to the sample surface to parallel. Meanwhile, a larger compaction pressure favors the formation of orthorhombic (o-) BaTiO3, which can result from the effects of internal stress and crystallite size. Composites made of BaTiO3 crystallites with higher internal stress and o-BaTiO3 contents may have higher values of the dielectric constant.
AB - In this study, the formation of internal stress, domain switching, phase transition, and dielectric property variations of BaTiO3 particles in the BaTiO3-PVDF composites are investigated. It is found that the characteristics of the composite are highly affected by the magnitude of the compaction pressure employed. The internal stress may change from a state of compressive to tensile as the pressure increases. This is characterized by domain switching, in which the c axis rotates 90°, leaning from perpendicular to the sample surface to parallel. Meanwhile, a larger compaction pressure favors the formation of orthorhombic (o-) BaTiO3, which can result from the effects of internal stress and crystallite size. Composites made of BaTiO3 crystallites with higher internal stress and o-BaTiO3 contents may have higher values of the dielectric constant.
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U2 - 10.1143/JJAP.33.3991
DO - 10.1143/JJAP.33.3991
M3 - Article
AN - SCOPUS:0028462243
VL - 33
SP - 3991
JO - Japanese Journal of Applied Physics
JF - Japanese Journal of Applied Physics
SN - 0021-4922
IS - 7R
ER -