Description
Pressure effects in metallic ferroelectrics
Ferroelectric materials are usually insulating. Recently a ferroelectric-like structural distortion was found in a metal LiOsO3 [1], which has attracted enormous investigations in theory and experiment [2,3]. In this project, we study how external pressure may influence the ferroelectric-like structural transition in LiOsO3 and compare the effects to its insulating counterpart LiNbO3. Our goal is to reveal differences and similarities of pressure effects on structural distortions in conventional (insulating) and unconventional (metallic) ferroelectrics and to establish a complete phase diagram.
Ferroelectric materials are usually insulating. Recently a ferroelectric-like structural distortion was found in a metal LiOsO3 [1], which has attracted enormous investigations in theory and experiment [2,3]. In this project, we study how external pressure may influence the ferroelectric-like structural transition in LiOsO3 and compare the effects to its insulating counterpart LiNbO3. Our goal is to reveal differences and similarities of pressure effects on structural distortions in conventional (insulating) and unconventional (metallic) ferroelectrics and to establish a complete phase diagram.
References:
[1] Nature Materials 12, 1024–1027 (2013)
[2] Journal of Materials Chemistry C. 4, 4000–4015 (2016)
[3] Nature 533, 68–72 (2016)
Prerequisite
In the junior/senior year with a STEM background
Preferred Time of Research
all year research
Weekly Commitment
8-10 hours
Location
NYUSH
Paid?
Yes, TBA
Contact
hanghui.chen@nyu.edu