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Title: Stress and Curvature Effects in Layered 2D Ferroelectric CuInP2S6

Journal Article · · ACS Nano

Nanoscale ferroelectric 2D materials offer the opportunity to investigate curvature and strain effects on materials functionalities. Among these, CuInP2S6 (CIPS) has attracted tremendous research interest in recent years due to combination of room temperature ferroelectricity, scalability to a few layers thickness, and ferrielectric properties due to coexistence of 2 polar sublattices. Here, we explore the local curvature and strain effect on polarization in CIPS via piezoresponse force microscopy and spectroscopy. To explain the observed behaviors and decouple the curvature and strain effects in 2D CIPS, we introduce the finite element Landau–Ginzburg–Devonshire model, revealing strong changes in hysteresis characteristics in regions subjected to tensile and compressive strain. The piezoresponse force microscopy (PFM) results show that bending induces ferrielectric domains in CIPS, and the polarization-voltage hysteresis loops differ in bending and nonbending regions. Furthermore, these studies offer insights into the fabrication of curvature-engineered nanoelectronic devices.

Research Organization:
Pennsylvania State University, PA (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES). Scientific User Facilities (SUF)
Grant/Contract Number:
SC0021118
OSTI ID:
2229373
Journal Information:
ACS Nano, Vol. 17, Issue 21; ISSN 1936-0851
Publisher:
American Chemical Society (ACS)Copyright Statement
Country of Publication:
United States
Language:
English

References (44)

Nanoscale piezoelectric response across a single antiparallel ferroelectric domain wall journal July 2005
2D Materials: Strain Engineering of 2D Materials: Issues and Opportunities at the Interface (Adv. Mater. 45/2019) journal November 2019
Strain Modulation of Graphene by Nanoscale Substrate Curvatures: A Molecular View journal February 2018
Anomalous polarization switching and permanent retention in a ferroelectric ionic conductor journal January 2020
Metal Thio- and Selenophosphates as Multifunctional van der Waals Layered Materials journal August 2017
Electrostrictive and electrostatic responses in contact mode voltage modulated scanning probe microscopies journal June 2014
Correlated electronic phases in twisted bilayer transition metal dichalcogenides journal June 2020
Large-Scale Domain Engineering in Two-Dimensional Ferroelectric CuInP2S6 via Giant Flexoelectric Effect journal April 2022
Copper sublattice ordering in layered CuMP2Se6 (M=In, Cr) journal February 1999
The piezoresponse force microscopy of surface layers and thin films: Effective response and resolution function journal October 2007
Strain engineering to facilitate the occurrence of 2D ferroelectricity in CuInP 2 S 6 monolayer journal September 2019
Flexoelectric engineering of van der Waals ferroelectric CuInP 2 S 6 journal August 2022
Cation–Eutectic Transition via Sublattice Melting in CuInP 2 S 6 /In 4/3 P 2 S 6 van der Waals Layered Crystals journal July 2017
Locally Controlled Cu-Ion Transport in Layered Ferroelectric CuInP 2 S 6 journal July 2018
Theory of antiferroelectric phase transitions journal July 2016
Controlled synthesis and room-temperature pyroelectricity of CuInP2S6 ultrathin flakes journal April 2019
Ferroelectric Schottky diodes of CuInP2S6 nanosheet journal October 2023
Domains in Ferroic Crystals and Thin Films book January 2010
Electric Field Effect in Atomically Thin Carbon Films journal October 2004
Screening-induced phase transitions in core-shell ferroic nanoparticles journal December 2022
Room-temperature ferroelectricity in CuInP2S6 ultrathin flakes journal August 2016
Tunable quadruple-well ferroelectric van der Waals crystals journal November 2019
Ion adsorption-induced reversible polarization switching of a van der Waals layered ferroelectric journal January 2021
Electronic correlations in twisted bilayer graphene near the magic angle journal August 2019
2D transition metal dichalcogenides journal June 2017
Thermal properties of graphene and nanostructured carbon materials journal August 2011
The rise of two-dimensional van der Waals ferroelectrics journal May 2018
Stress-induced phase transitions in nanoscale Cu In P 2 S 6 journal August 2021
Maximized electron interactions at the magic angle in twisted bilayer graphene journal July 2019
Fundamentals of flexoelectricity in solids journal October 2013
Ferrielectric ordering in lamellar CuInP 2 S 6 journal November 1997
The rise of 2D dielectrics/ferroelectrics journal December 2019
Layer-dependent ferromagnetism in a van der Waals crystal down to the monolayer limit journal June 2017
Resolution-function theory in piezoresponse force microscopy: Wall imaging, spectroscopy, and lateral resolution journal May 2007
Tuning superconductivity in twisted bilayer graphene journal January 2019
Correlated polarization switching in the proximity of a 180 ° domain wall journal July 2010
Micrometer-Scale Ballistic Transport in Encapsulated Graphene at Room Temperature journal June 2011
Modeling and measurement of surface displacements in BaTiO3 bulk material in piezoresponse force microscopy journal July 2004
Temperature-Assisted Piezoresponse Force Microscopy: Probing Local Temperature-Induced Phase Transitions in Ferroics journal August 2022
Electronic flexoelectricity in low-dimensional systems journal January 2008
CuInP 2 S 6 Room Temperature Layered Ferroelectric journal May 2015
Extraordinary Nonlinear Optical Interaction from Strained Nanostructures in van der Waals CuInP2S6 journal August 2022
Interface-Tuning of Ferroelectricity and Quadruple-Well State in CuInP2S6 via Ferroelectric Oxide journal August 2023
Reducing Threshold of Ferroelectric Domain Switching in Ultrathin Two-Dimensional CuInP2S6 Ferroelectrics via Electrical–Mechanical Coupling journal January 2023