A Review on Enhancement of Dielectric Loss and Constant of Bifeo3 and Different Type of Polymer Composites

Polymer composite materials with better dielectric qualities have garnered a lot of interest for use in advanced

electronic devices due to their affordability, ease of processing, and potential for energy storage. Because of its

multiferroic nature—which includes both ferroelectric and antiferromagnetic properties—bismuth ferrite

(BiFeO₃ ) has become a promising candidate among other ceramic fillers. However, the direct application of

BiFeO₃ is limited due to it’s low breakdown strength, poor manufacturability, and high dielectric loss. To get

around these problems, scientists have looked into adding BiFeO₃ to polymer matrices like poly(methyl

methacrylate) (PMMA) and poly(vinylidene fluoride) (PVDF) to make polymer–ceramic composites that

perform better as dielectrics. To guarantee uniform distribution of BiFeO₃ particles in the polymer matrix,

surface-modifying agents and optimized dispersion techniques have been used.The structural, dielectric, and

processing difficulties of BiFeO₃ -based polymer composites are covered in this review, along with new

developments in their manufacturing processes and possible uses in memory devices, gate dielectrics, and

telecom miniaturized capacitors.