skip to main content

Attention:

The NSF Public Access Repository (NSF-PAR) system and access will be unavailable from 11:00 PM ET on Thursday, October 10 until 2:00 AM ET on Friday, October 11 due to maintenance. We apologize for the inconvenience.


Title: Maximum supercooling studies in Ti 39.5 Zr 39.5 Ni 21 , Ti 40 Zr 30 Ni 30 , and Zr 80 Pt 20 liquids—Connecting liquid structure and the nucleation barrier
NSF-PAR ID:
10102818
Author(s) / Creator(s):
 ;  ;  ;  
Publisher / Repository:
American Institute of Physics
Date Published:
Journal Name:
The Journal of Chemical Physics
Volume:
150
Issue:
20
ISSN:
0021-9606
Page Range / eLocation ID:
Article No. 204510
Format(s):
Medium: X
Sponsoring Org:
National Science Foundation
More Like this
  1. null (Ed.)
  2. null (Ed.)
  3. Ferroelectric field‐effect transistors (FeFETs) employing graphene on inorganic perovskite substrates receive considerable attention due to their interesting electronic and memory properties. They are known to exhibit an unusual hysteresis of electronic transport that is not consistent with the ferroelectric polarization hysteresis and is previously shown to be associated with charge trapping at graphene–ferroelectric interface. Here, an electrical measurement scheme that minimizes the effect of charge traps and reveals the polarization‐dependent hysteresis of electronic transport in graphene–Pb(Zr,Ti)O3FeFETs is demonstrated. Observation of the polarization‐dependent conductivity hysteresis is important for the fundamental understanding of the interplay between the ferroelectric polarization and charge carriers in graphene. It is also important for practical memory applications because this hysteresis emulates the operation of nonvolatile memories and reveals the range of ON and OFF currents that can be achieved in long term data storage. It is demonstrated that this measurement scheme can be used to optimize the memory performance of graphene–PZT FeFETs that can exhibit nonvolatile time‐independent ON/OFF ratios of over 5. The described measurement technique can potentially be used in the studies of kinetics of charge trap dissipation, polarization‐dependent properties, and memory performance of FeFET devices comprising other 2D materials and various ferroelectric substrates.

     
    more » « less