Event date:
Sep 29 2021 6:00 pm

Manipulation of the Positive Temperature Coefficient of Resistivity and Double Schottky Barrier Formed at the Grain Boundary in Bifeo3 through Systematic Substitutions

Speaker(s)
Fiza Mumtaz (PhD student)
Venue
Zoom/Online
Abstract
The major challenge which limits the application of inorganic perovskite multiferroics is the presence of high conductivity giving rise to extrinsic factors which suppress intrinsic ferroelectric response. Therefore, it is vital to identify, control and understand conductivity effects in these perovskite oxides. For this purpose, the electrical and dielectric response of well-known multiferroic, BiFeO3 (BFO), has been extensively studied. In the present study role of oxygen, vacancies have been investigated clearly and intentionally controlling the formation of space charges via a variety of isovalent and aliovalent substitutions. Based on the activation energies, calculated for the three identified thermal activated processes, a potential well diagram is proposed.

Fiza Mumtaz (PhD student) will be talking about “Manipulation of the Positive Temperature Coefficient of Resistivity and Double Schottky Barrier Formed at the Grain Boundary in Bifeo3 through Systematic Substitutions” in the next Student Seminar Series by the Department of Physics. The session will take place on Wednesday 29th September at 6 pm PKST via Zoom.

Please join via this Zoom link: https://lums-edu-pk.zoom.us/j/97844542531