Mechanical and Dielectric Behaviour of CaCu3Ti4O12 and Nb Doped CaCu3Ti4O12 Poly(vinylidene fluoride) Composites | Zendy

Anshuman Srivastava | Zendy; Karun Kumar Jana | Zendy; Pralay Maiti | Zendy; Devendra Kumar | Zendy; Om Parkash | Zendy

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Mechanical and Dielectric Behaviour of CaCu₃Ti₄O₁₂ and Nb Doped CaCu₃Ti₄O₁₂ Poly(vinylidene fluoride) Composites

Author(s) -

Anshuman Srivastava,

Karun Kumar Jana,

Pralay Maiti,

Devendra Kumar,

Om Parkash

Publication year - 2014

Publication title -

journal of composites

Language(s) - English

Resource type - Journals

eISSN - 2356-7252

pISSN - 2314-5978

DOI - 10.1155/2014/769379

Subject(s) - dielectric , materials science , relaxation (psychology) , ceramic , doping , analytical chemistry (journal) , microstructure , powder diffraction , phase (matter) , permittivity , composite material , diffraction , mineralogy , crystallography , chemistry , physics , optics , psychology , social psychology , optoelectronics , organic chemistry , chromatography

PVDF has been reinforced with different amount of CaCu3Ti4-5x/4NbxO12 with x=0.05 powder prepared by solid state ceramic method. Composites were prepared by melt extrusion method. Phase composition was studied using powder X-ray diffraction (XRD). Microstructural, dielectric, and mechanical properties have also been studied. These composites have Young’s modulus more than that of pure PVDF. Two dielectric relaxations, one at low frequency and the other at high frequency, have been observed in these composites. Dielectric relaxation at low frequencies is of Maxwell-Wagner type while the one observed at high frequency is due to hopping of electrons among different valent states of transition metal ions. Nature of dielectric relaxation has been analysed using H-N function

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