Study of dielectric and magnetic properties of (1-x) PVDF – x FeOOH nanocomposite thin films (x= 0 to15 wt%)

Abstract

In this study, we have set out with two primary objectives, each targeting specific properties and capabilities of the materials involved. Firstly, our focus rests on the utilization of polyvinylidene fluoride (PVDF) as a pivotal component in device fabrication. PVDF is chosen for its dual advantages: flexibility and ferroelectric properties. Its flexible nature allows for ease of processing and adaptation to various device architectures, while its inherent ferroelectricity adds an extra dimension of functionality, enabling the manipulation of electrical polarization within the material. Conversely, we turn our attention to goethite, a material renowned for its high surface- to-volume ratio. This characteristic suggests the potential for goethite to possess enhanced capacitance or charge storage capacity. By incorporating goethite into PVDF matrix, we aim to exploit its unique surface properties to augment the charge storage capabilities of the overall device. On the other hand, the magnetic properties of FeOOH nano particles, emerges due to the inherent strain, plays a crucial role on the dielectric behavior of the devices. This integration of a dielectric material, having finite magnetic moment, into a ferroelectric matrix, like PVDF, holds promise for the development of a composite material that not only retains the ferroelectric properties of PVDF but also exhibits improved charge storage performance, thanks to the contribution of goethite. Our investigation goes beyond simply combining materials; we're exploring the potential correlation between magnetic and dielectric properties of PVDF – FeOOH nanocomposite. This correlation could open up new possibilities for device fabrication having magneto dielectric response.