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Title: Differentiating Ferroelectric and Nonferroelectric Electromechanical Effects with Scanning Probe Microscopy

Abstract

Ferroelectricity in functional materials remains one of the most fascinating areas of modern science in the past several decades. In the last several years, the rapid development of piezoresponse force microscopy (PFM) and spectroscopy revealed the presence of electromechanical hysteresis loops and bias-induced remnant polar states in a broad variety of materials including many inorganic oxides, polymers, and biosystems. In many cases, this behavior was interpreted as the ample evidence for ferroelectric nature of the system. Here, we systematically analyze PFM responses on ferroelectric and nonferroelectric materials and demonstrate that mechanisms unrelated to ferroelectricity can induce ferroelectric-like characteristics through charge injection and electrostatic forces on the tip. In this paper, we will focus on similarities and differences in various PFM measurement characteristics to provide an experimental guideline to differentiate between ferroelectric material properties and charge injection. In conclusion, we apply the developed measurement protocols to an unknown ferroelectric material.

Authors:
 [1];  [1];  [1];  [2];  [1];  [3];  [4];  [5];  [1]
  1. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). The Center for Nanophase Materials Sciences; Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Inst. for Functional Imaging of Materials
  2. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Materials Science and Technology Division
  3. Univ. of Wisconsin, Madison, WI (United States). Materials Science and Engineering
  4. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). The Center for Nanophase Materials Sciences
  5. Tsinghua Univ., Beijing (China). State Key Lab. of Low-Dimensional Quantum Physics. Dept. of Physics; Collaborative Innovation Center of Quantum Matter, Beijing (China); RIKEN Center for Emergent Matter Science (CEMS), Wako (Japan)
Publication Date:
Research Org.:
Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States). Center for Nanophase Materials Sciences (CNMS)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES); National Science Foundation (NSF); National Basic Research Program of China; National Natural Science Foundation of China (NSFC)
OSTI Identifier:
1265570
Grant/Contract Number:  
AC05-00OR22725
Resource Type:
Accepted Manuscript
Journal Name:
ACS Nano
Additional Journal Information:
Journal Volume: 9; Journal Issue: 6; Journal ID: ISSN 1936-0851
Publisher:
American Chemical Society (ACS)
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE

Citation Formats

Balke, Nina, Maksymovych, Petro, Jesse, Stephen, Herklotz, Andreas, Tselev, Alexander, Eom, Chang-Beom, Kravchenko, Ivan I., Yu, Pu, and Kalinin, Sergei V. Differentiating Ferroelectric and Nonferroelectric Electromechanical Effects with Scanning Probe Microscopy. United States: N. p., 2015. Web. doi:10.1021/acsnano.5b02227.
Balke, Nina, Maksymovych, Petro, Jesse, Stephen, Herklotz, Andreas, Tselev, Alexander, Eom, Chang-Beom, Kravchenko, Ivan I., Yu, Pu, & Kalinin, Sergei V. Differentiating Ferroelectric and Nonferroelectric Electromechanical Effects with Scanning Probe Microscopy. United States. https://doi.org/10.1021/acsnano.5b02227
Balke, Nina, Maksymovych, Petro, Jesse, Stephen, Herklotz, Andreas, Tselev, Alexander, Eom, Chang-Beom, Kravchenko, Ivan I., Yu, Pu, and Kalinin, Sergei V. Tue . "Differentiating Ferroelectric and Nonferroelectric Electromechanical Effects with Scanning Probe Microscopy". United States. https://doi.org/10.1021/acsnano.5b02227. https://www.osti.gov/servlets/purl/1265570.
@article{osti_1265570,
title = {Differentiating Ferroelectric and Nonferroelectric Electromechanical Effects with Scanning Probe Microscopy},
author = {Balke, Nina and Maksymovych, Petro and Jesse, Stephen and Herklotz, Andreas and Tselev, Alexander and Eom, Chang-Beom and Kravchenko, Ivan I. and Yu, Pu and Kalinin, Sergei V.},
abstractNote = {Ferroelectricity in functional materials remains one of the most fascinating areas of modern science in the past several decades. In the last several years, the rapid development of piezoresponse force microscopy (PFM) and spectroscopy revealed the presence of electromechanical hysteresis loops and bias-induced remnant polar states in a broad variety of materials including many inorganic oxides, polymers, and biosystems. In many cases, this behavior was interpreted as the ample evidence for ferroelectric nature of the system. Here, we systematically analyze PFM responses on ferroelectric and nonferroelectric materials and demonstrate that mechanisms unrelated to ferroelectricity can induce ferroelectric-like characteristics through charge injection and electrostatic forces on the tip. In this paper, we will focus on similarities and differences in various PFM measurement characteristics to provide an experimental guideline to differentiate between ferroelectric material properties and charge injection. In conclusion, we apply the developed measurement protocols to an unknown ferroelectric material.},
doi = {10.1021/acsnano.5b02227},
journal = {ACS Nano},
number = 6,
volume = 9,
place = {United States},
year = {Tue Jun 02 00:00:00 EDT 2015},
month = {Tue Jun 02 00:00:00 EDT 2015}
}

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Works referenced in this record:

Ferroelectric Memories
journal, December 1989


Unusual phase transitions in ferroelectric nanodisks and nanorods
journal, December 2004

  • Naumov, Ivan I.; Bellaiche, L.; Fu, Huaxiang
  • Nature, Vol. 432, Issue 7018
  • DOI: 10.1038/nature03107

Ferroelectricity in Ultrathin Perovskite Films
journal, June 2004

  • Fong, Dillon D.; Stephenson, G. Brian; Streiffer, Stephen K.
  • Science, Vol. 304, Issue 5677, p. 1650-1653
  • DOI: 10.1126/science.1098252

Conduction at domain walls in oxide multiferroics
journal, January 2009

  • Seidel, J.; Martin, L. W.; He, Q.
  • Nature Materials, Vol. 8, Issue 3
  • DOI: 10.1038/nmat2373

Polarization Control of Electron Tunneling into Ferroelectric Surfaces
journal, June 2009


Enhanced electromechanical response of ferroelectrics due to charged domain walls
journal, January 2012

  • Sluka, Tomas; Tagantsev, Alexander K.; Damjanovic, Dragan
  • Nature Communications, Vol. 3, Issue 1
  • DOI: 10.1038/ncomms1751

APPLIED PHYSICS: Tunneling Across a Ferroelectric
journal, July 2006


Conduction at Domain Walls in Insulating Pb(Zr0.2Ti0.8)O3 Thin Films
journal, September 2011

  • Guyonnet, Jill; Gaponenko, Iaroslav; Gariglio, Stefano
  • Advanced Materials, Vol. 23, Issue 45
  • DOI: 10.1002/adma.201102254

Tunnel junctions with multiferroic barriers
journal, March 2007

  • Gajek, Martin; Bibes, Manuel; Fusil, Stéphane
  • Nature Materials, Vol. 6, Issue 4
  • DOI: 10.1038/nmat1860

Local bias induced ferroelectricity in manganites with competing charge and orbital order states
journal, January 2014

  • Figueiras, Fábio G. N.; Bdikin, Igor K.; Amaral, Vitor B. S.
  • Phys. Chem. Chem. Phys., Vol. 16, Issue 10
  • DOI: 10.1039/C4CP00075G

MATERIALS SCIENCE: The Renaissance of Magnetoelectric Multiferroics
journal, July 2005


Biological Ferroelectricity Uncovered in Aortic Walls by Piezoresponse Force Microscopy
journal, February 2012


Advances in the growth and characterization of magnetic, ferroelectric, and multiferroic oxide thin films
journal, May 2010

  • Martin, L. W.; Chu, Y. -H.; Ramesh, R.
  • Materials Science and Engineering: R: Reports, Vol. 68, Issue 4-6
  • DOI: 10.1016/j.mser.2010.03.001

Advanced synthesis techniques and routes to new single-phase multiferroics
journal, October 2012

  • Martin, Lane W.; Schlom, Darrell G.
  • Current Opinion in Solid State and Materials Science, Vol. 16, Issue 5
  • DOI: 10.1016/j.cossms.2012.03.001

Strong polarization enhancement in asymmetric three-component ferroelectric superlattices
journal, January 2005

  • Lee, Ho Nyung; Christen, Hans M.; Chisholm, Matthew F.
  • Nature, Vol. 433, Issue 7024
  • DOI: 10.1038/nature03261

Room-temperature ferroelectricity in strained SrTiO3
journal, August 2004

  • Haeni, J. H.; Irvin, P.; Chang, W.
  • Nature, Vol. 430, Issue 7001, p. 758-761
  • DOI: 10.1038/nature02773

Domain structure and phase transitions in epitaxial KNbO 3 thin films studied by in situ second harmonic generation measurements
journal, March 1996

  • Gopalan, Venkatraman; Raj, Rishi
  • Applied Physics Letters, Vol. 68, Issue 10
  • DOI: 10.1063/1.115922

Effect of stoichiometry on the dielectric properties and soft mode behavior of strained epitaxial SrTiO 3 thin films on DyScO 3 substrates
journal, February 2013

  • Lee, Che-Hui; Skoromets, Volodymyr; Biegalski, Michael D.
  • Applied Physics Letters, Vol. 102, Issue 8
  • DOI: 10.1063/1.4793649

Nanoscale Characterization of Ferroelectric Materials for Piezoelectric Applications
journal, October 2006


Imaging and Control of Domain Structures in Ferroelectric thin Films via Scanning Force Microscopy
journal, August 1998


Vector Piezoresponse Force Microscopy
journal, May 2006

  • Kalinin, Sergei V.; Rodriguez, Brian J.; Jesse, Stephen
  • Microscopy and Microanalysis, Vol. 12, Issue 03
  • DOI: 10.1017/S1431927606060156

Nanoscale Visualization and Control of Ferroelectric Domains by Atomic Force Microscopy
journal, May 1995


Electromechanical Imaging and Spectroscopy of Ferroelectric and Piezoelectric Materials: State of the Art and Prospects for the Future
journal, August 2009


Local piezoelectric properties of ZnO thin films prepared by RF-plasma-assisted pulsed-laser deposition method
journal, May 2010


Interesting Evidence for Template-Induced Ferroelectric Behavior in Ultra-Thin Titanium Dioxide Films Grown on (110) Neodymium Gallium Oxide Substrates
journal, January 2014

  • Deepak, Nitin; Caro, Miguel A.; Keeney, Lynette
  • Advanced Functional Materials, Vol. 24, Issue 19
  • DOI: 10.1002/adfm.201302946

Investigation of the non-volatile resistance change in noncentrosymmetric compounds
journal, August 2012

  • Herng, T. S.; Kumar, A.; Ong, C. S.
  • Scientific Reports, Vol. 2, Issue 1
  • DOI: 10.1038/srep00587

Ferroelectric switching in epitaxial GeTe films
journal, June 2014

  • Kolobov, A. V.; Kim, D. J.; Giussani, A.
  • APL Materials, Vol. 2, Issue 6
  • DOI: 10.1063/1.4881735

Nanoscale Ferroelectric and Piezoelectric Properties of Sb 2 S 3 Nanowire Arrays
journal, January 2012

  • Varghese, Justin; Barth, Sven; Keeney, Lynette
  • Nano Letters, Vol. 12, Issue 2
  • DOI: 10.1021/nl2039106

Decoding the Fingerprint of Ferroelectric Loops: Comprehension of the Material Properties and Structures
journal, December 2013

  • Jin, Li; Li, Fei; Zhang, Shujun
  • Journal of the American Ceramic Society, Vol. 97, Issue 1
  • DOI: 10.1111/jace.12773

Contrast Mechanism Maps for Piezoresponse Force Microscopy
journal, May 2002

  • Kalinin, Sergei V.; Bonnell, Dawn A.
  • Journal of Materials Research, Vol. 17, Issue 5
  • DOI: 10.1557/JMR.2002.0138

Switching spectroscopic measurement of surface potentials on ferroelectric surfaces via an open-loop Kelvin probe force microscopy method
journal, December 2012

  • Li, Qian; Liu, Yun; Wang, Danyang
  • Applied Physics Letters, Vol. 101, Issue 24
  • DOI: 10.1063/1.4772511

Exploring Local Electrostatic Effects with Scanning Probe Microscopy: Implications for Piezoresponse Force Microscopy and Triboelectricity
journal, October 2014

  • Balke, Nina; Maksymovych, Petro; Jesse, Stephen
  • ACS Nano, Vol. 8, Issue 10
  • DOI: 10.1021/nn505176a

Nanoscale mapping of ion diffusion in a lithium-ion battery cathode
journal, August 2010


Real Space Mapping of Li-Ion Transport in Amorphous Si Anodes with Nanometer Resolution
journal, September 2010

  • Balke, Nina; Jesse, Stephen; Kim, Yoongu
  • Nano Letters, Vol. 10, Issue 9
  • DOI: 10.1021/nl101439x

Local Detection of Activation Energy for Ionic Transport in Lithium Cobalt Oxide
journal, June 2012

  • Balke, Nina; Kalnaus, Sergiy; Dudney, Nancy J.
  • Nano Letters, Vol. 12, Issue 7
  • DOI: 10.1021/nl300219g

Dynamic-Contact Electrostatic Force Microscopy and its Application to Ferroelectric Domain
book, January 2004


Atomic-scale study of electric dipoles near charged and uncharged domain walls in ferroelectric films
journal, December 2007

  • Jia, Chun-Lin; Mi, Shao-Bo; Urban, Knut
  • Nature Materials, Vol. 7, Issue 1
  • DOI: 10.1038/nmat2080

Atomic-Scale Compensation Phenomena at Polar Interfaces
journal, November 2010


Watching domains grow: In-situ studies of polarization switching by combined scanning probe and scanning transmission electron microscopy
journal, September 2011

  • Chang, Hyejung; Kalinin, Sergei V.; Yang, Seungyeul
  • Journal of Applied Physics, Vol. 110, Issue 5
  • DOI: 10.1063/1.3623779

Switchable Induced Polarization in LaAlO 3 /SrTiO 3 Heterostructures
journal, January 2012

  • Bark, C. W.; Sharma, P.; Wang, Y.
  • Nano Letters, Vol. 12, Issue 4
  • DOI: 10.1021/nl3001088

Direct imaging of the spatial and energy distribution of nucleation centres in ferroelectric materials
journal, February 2008

  • Jesse, Stephen; Rodriguez, Brian J.; Choudhury, Samrat
  • Nature Materials, Vol. 7, Issue 3
  • DOI: 10.1038/nmat2114

Quantitative mapping of switching behavior in piezoresponse force microscopy
journal, July 2006

  • Jesse, Stephen; Lee, Ho Nyung; Kalinin, Sergei V.
  • Review of Scientific Instruments, Vol. 77, Issue 7
  • DOI: 10.1063/1.2214699

Principle of ferroelectric domain imaging using atomic force microscope
journal, January 2001

  • Hong, Seungbum; Woo, Jungwon; Shin, Hyunjung
  • Journal of Applied Physics, Vol. 89, Issue 2, p. 1377-1386
  • DOI: 10.1063/1.1331654

Spatially-resolved mapping of history-dependent coupled electrochemical and electronical behaviors of electroresistive NiO
journal, October 2014

  • Sugiyama, Issei; Kim, Yunseok; Jesse, Stephen
  • Scientific Reports, Vol. 4, Issue 1
  • DOI: 10.1038/srep06725

Probing Surface and Bulk Electrochemical Processes on the LaAlO 3 –SrTiO 3 Interface
journal, April 2012

  • Kumar, Amit; Arruda, Thomas M.; Kim, Yunseok
  • ACS Nano, Vol. 6, Issue 5
  • DOI: 10.1021/nn204960c

Correlative Multimodal Probing of Ionically-Mediated Electromechanical Phenomena in Simple Oxides
journal, October 2013

  • Kim, Yunseok; Strelcov, Evgheni; Hwang, In Rok
  • Scientific Reports, Vol. 3, Issue 1
  • DOI: 10.1038/srep02924

Local probing of electrochemically induced negative differential resistance in TiO 2 memristive materials
journal, February 2013


Measuring oxygen reduction/evolution reactions on the nanoscale
journal, August 2011

  • Kumar, Amit; Ciucci, Francesco; Morozovska, Anna N.
  • Nature Chemistry, Vol. 3, Issue 9
  • DOI: 10.1038/nchem.1112

Identification of the ferroelectric switching process and dopant-dependent switching properties in orthorhombic HfO 2 : A first principles insight
journal, March 2014

  • Clima, S.; Wouters, D. J.; Adelmann, C.
  • Applied Physics Letters, Vol. 104, Issue 9
  • DOI: 10.1063/1.4867975

Wake-up effects in Si-doped hafnium oxide ferroelectric thin films
journal, November 2013

  • Zhou, Dayu; Xu, Jin; Li, Qing
  • Applied Physics Letters, Vol. 103, Issue 19
  • DOI: 10.1063/1.4829064

Incipient Ferroelectricity in Al-Doped HfO2 Thin Films
journal, March 2012

  • Mueller, Stefan; Mueller, Johannes; Singh, Aarti
  • Advanced Functional Materials, Vol. 22, Issue 11
  • DOI: 10.1002/adfm.201103119

Ferroelectricity in yttrium-doped hafnium oxide
journal, December 2011

  • Müller, J.; Schröder, U.; Böscke, T. S.
  • Journal of Applied Physics, Vol. 110, Issue 11
  • DOI: 10.1063/1.3667205

Ferroelectricity in Simple Binary ZrO 2 and HfO 2
journal, July 2012

  • Müller, Johannes; Böscke, Tim S.; Schröder, Uwe
  • Nano Letters, Vol. 12, Issue 8
  • DOI: 10.1021/nl302049k

Ferroelectricity in Strain-Free SrTiO 3 Thin Films
journal, May 2010


Role of measurement voltage on hysteresis loop shape in Piezoresponse Force Microscopy
journal, November 2012

  • Strelcov, E.; Kim, Y.; Yang, J. C.
  • Applied Physics Letters, Vol. 101, Issue 19
  • DOI: 10.1063/1.4764939

The band excitation method in scanning probe microscopy for rapid mapping of energy dissipation on the nanoscale
journal, September 2007


Works referencing / citing this record:

Probing of Local Multifield Coupling Phenomena of Advanced Materials by Scanning Probe Microscopy Techniques
journal, October 2018


Ferroelectric-like hysteresis loop originated from non-ferroelectric effects
journal, September 2016

  • Kim, Bora; Seol, Daehee; Lee, Shinbuhm
  • Applied Physics Letters, Vol. 109, Issue 10
  • DOI: 10.1063/1.4962387

Electrostatic memory in KTaO 3
journal, April 2019

  • Wadehra, Neha; Chakraverty, S.
  • Applied Physics Letters, Vol. 114, Issue 16
  • DOI: 10.1063/1.5087035

Piezoresponse force microscopy and nanoferroic phenomena
journal, April 2019


Aligning in-plane polarization multiplies piezoresponse in P(VDF-TrFE) films on graphite
journal, October 2018


Ferroelectric resistive switching behavior in two-dimensional materials/BiFeO 3 hetero-junctions
journal, January 2018

  • Li, Yang; Sun, Xue-Yin; Xu, Cheng-Yan
  • Nanoscale, Vol. 10, Issue 48
  • DOI: 10.1039/c8nr05408h

Symmetry changes during relaxation process and pulse discharge performance of the BaTiO 3 -Bi(Mg 1/2 Ti 1/2 )O 3 ceramic
journal, August 2018

  • Hu, Qingyuan; Bian, Jihong; Zelenovskiy, Pavel S.
  • Journal of Applied Physics, Vol. 124, Issue 5
  • DOI: 10.1063/1.5030381

Room temperature magnetoelectric coupling in a molecular ferroelectric ytterbium(III) complex
journal, February 2020

  • Long, Jérôme; Ivanov, Maxim S.; Khomchenko, Vladimir A.
  • Science, Vol. 367, Issue 6478
  • DOI: 10.1126/science.aaz2795

Interface Control of Ferroelectricity in an SrRuO 3 /BaTiO 3 /SrRuO 3 Capacitor and its Critical Thickness
journal, March 2017

  • Shin, Yeong Jae; Kim, Yoonkoo; Kang, Sung-Jin
  • Advanced Materials, Vol. 29, Issue 19
  • DOI: 10.1002/adma.201602795

Evolution of ferroelectric HfO2 in ultrathin region down to 3 nm
journal, March 2018

  • Tian, Xuan; Shibayama, Shigehisa; Nishimura, Tomonori
  • Applied Physics Letters, Vol. 112, Issue 10
  • DOI: 10.1063/1.5017094

Electric and Mechanical Switching of Ferroelectric and Resistive States in Semiconducting BaTiO 3- δ Films on Silicon
journal, August 2017

  • Gómez, Andrés; Vila-Fungueiriño, José Manuel; Moalla, Rahma
  • Small, Vol. 13, Issue 39
  • DOI: 10.1002/smll.201701614

Ferroelectric or non-ferroelectric: Why so many materials exhibit “ferroelectricity” on the nanoscale
journal, June 2017

  • Vasudevan, Rama K.; Balke, Nina; Maksymovych, Peter
  • Applied Physics Reviews, Vol. 4, Issue 2
  • DOI: 10.1063/1.4979015

The existence and impact of persistent ferroelectric domains in MAPbI 3
journal, January 2019

  • Garten, Lauren M.; Moore, David T.; Nanayakkara, Sanjini U.
  • Science Advances, Vol. 5, Issue 1
  • DOI: 10.1126/sciadv.aas9311

Exploring the Magnetoelectric Coupling at the Composite Interfaces of FE/FM/FE Heterostructures
journal, November 2018


Anti-parallel polarization switching in a triglycine sulfate organic ferroelectric insulator: The role of surface charges
journal, April 2018

  • Ma, He; Wu, Zhuangchun; Peng, Dongwen
  • Applied Physics Letters, Vol. 112, Issue 16
  • DOI: 10.1063/1.5023564

Piezoelectric and ferroelectric properties of organic single crystals and films derived from chiral 2-methoxy and 2-amino acids
journal, April 2016


Effect of surface charges on the polarization of BaTiO 3 thin films investigated by UHVSPM
journal, May 2018

  • Suzuki, Keigo; Hosokura, Tadasu; Okamoto, Takafumi
  • Journal of the American Ceramic Society, Vol. 101, Issue 10
  • DOI: 10.1111/jace.15734

Local electromechanical characterization of Pr doped BiFeO 3 ceramics
journal, March 2018


Ferroelectric and piezoelectric properties of Hf 1-x Zr x O 2 and pure ZrO 2 films
journal, May 2017

  • Starschich, S.; Schenk, T.; Schroeder, U.
  • Applied Physics Letters, Vol. 110, Issue 18
  • DOI: 10.1063/1.4983031

Recent Progress in Two‐Dimensional Ferroelectric Materials
journal, November 2019


Converse flexoelectricity yields large piezoresponse force microscopy signals in non-piezoelectric materials
journal, March 2019


Quantification of surface displacements and electromechanical phenomena via dynamic atomic force microscopy
journal, September 2016


Imaging Metal Halide Perovskites Material and Properties at the Nanoscale
journal, December 2019


The promise of piezoelectric polymers: Piezoelectric polymers
journal, May 2018

  • Usher, Timothy D.; Cousins, Kimberley R.; Zhang, Renwu
  • Polymer International, Vol. 67, Issue 7
  • DOI: 10.1002/pi.5584

Ferroelectricity mediated by ferroelastic domain switching in HfO 2 -based epitaxial thin films
journal, November 2018

  • Shimizu, Takao; Mimura, Takanori; Kiguchi, Takanori
  • Applied Physics Letters, Vol. 113, Issue 21
  • DOI: 10.1063/1.5055258

Field-Polarity-Dependent Domain Growth in Epitaxial BaTiO 3 Films
journal, March 2018

  • Roth, Robert; Guo, Er-Jia; Rafique, Mohsin
  • physica status solidi (b), Vol. 255, Issue 7
  • DOI: 10.1002/pssb.201700486

Ferroelectric Tunnel Junctions: Modulations on the Potential Barrier
journal, October 2019


Direct observation of room-temperature out-of-plane ferroelectricity and tunneling electroresistance at the two-dimensional limit
journal, August 2018


Reply to: On the ferroelectricity of CH3NH3PbI3 perovskites
journal, September 2019


Mixed electrochemical–ferroelectric states in nanoscale ferroelectrics
journal, May 2017

  • Yang, Sang Mo; Morozovska, Anna N.; Kumar, Rajeev
  • Nature Physics, Vol. 13, Issue 8
  • DOI: 10.1038/nphys4103

Ultra-wide temperature electronic synapses based on self-rectifying ferroelectric memristors
journal, September 2019


Enhanced piezoelectricity of thin film hafnia-zirconia (HZO) by inorganic flexible substrates
journal, July 2018

  • Hsain, H. Alex; Sharma, Pankaj; Yu, Hyeonggeun
  • Applied Physics Letters, Vol. 113, Issue 2
  • DOI: 10.1063/1.5031134

Microstructure and local electrical behavior in [(Nd 2 Ti 2 O 7 ) 4 /(SrTiO 3 ) n ] 10 ( n = 4–8) superlattices
journal, January 2018

  • Carlier, Thomas; Ferri, Anthony; Saitzek, Sébastien
  • RSC Advances, Vol. 8, Issue 21
  • DOI: 10.1039/c8ra00824h

Size-effect in layered ferrielectric CuInP2S6
journal, October 2016

  • Chyasnavichyus, Marius; Susner, Michael A.; Ievlev, Anton V.
  • Applied Physics Letters, Vol. 109, Issue 17
  • DOI: 10.1063/1.4965837

Towards nanoscale electrical measurements in liquid by advanced KPFM techniques: a review
journal, July 2018

  • Collins, Liam; Kilpatrick, Jason I.; Kalinin, Sergei V.
  • Reports on Progress in Physics, Vol. 81, Issue 8
  • DOI: 10.1088/1361-6633/aab560

Direct and converse piezoelectric responses at the nanoscale from epitaxial BiFeO 3 thin films grown by polymer assisted deposition
journal, January 2018

  • Vila-Fungueiriño, José Manuel; Gómez, Andrés; Antoja-Lleonart, Jordi
  • Nanoscale, Vol. 10, Issue 43
  • DOI: 10.1039/c8nr05737k

Dielectric and ferroic properties of metal halide perovskites
journal, January 2019

  • Wilson, Jacob N.; Frost, Jarvist M.; Wallace, Suzanne K.
  • APL Materials, Vol. 7, Issue 1
  • DOI: 10.1063/1.5079633

Effect of Fe-doping on the structure and magnetoelectric properties of (Ba 0.85 Ca 0.15 )(Ti 0.9 Zr 0.1 )O 3 synthesized by a chemical route
journal, January 2016

  • Venkata Ramana, E.; Figueiras, F.; Mahajan, A.
  • Journal of Materials Chemistry C, Vol. 4, Issue 5
  • DOI: 10.1039/c5tc00914f

Exploring Anomalous Polarization Dynamics in Organometallic Halide Perovskites
journal, January 2018

  • Ahmadi, Mahshid; Collins, Liam; Puretzky, Alexander
  • Advanced Materials, Vol. 30, Issue 11
  • DOI: 10.1002/adma.201705298

Ferroelectric polarization-controlled resistive switching in BaTiO 3 /SmNiO 3 epitaxial heterostructures
journal, March 2019

  • Jia, Mei-Xiu; Ren, Zhong-Qi; Liu, Yan-Dong
  • Applied Physics Letters, Vol. 114, Issue 10
  • DOI: 10.1063/1.5066032

The flexoelectric effect in Al-doped hafnium oxide
journal, January 2018

  • Celano, Umberto; Popovici, Mihaela; Florent, Karine
  • Nanoscale, Vol. 10, Issue 18
  • DOI: 10.1039/c8nr00618k

Dynamic behavior of CH 3 NH 3 PbI 3 perovskite twin domains
journal, August 2018

  • Liu, Yongtao; Collins, Liam; Belianinov, Alex
  • Applied Physics Letters, Vol. 113, Issue 7
  • DOI: 10.1063/1.5041256

Giant tunnelling electroresistance in metal/ferroelectric/semiconductor tunnel junctions by engineering the Schottky barrier
journal, May 2017

  • Xi, Zhongnan; Ruan, Jieji; Li, Chen
  • Nature Communications, Vol. 8, Issue 1
  • DOI: 10.1038/ncomms15217

Electrical polarization induced by atomically engineered compositional gradient in complex oxide solid solution
journal, April 2019


Narrow optical gap ferroelectric Bi 2 ZnTiO 6 thin films deposited by RF sputtering
journal, January 2019

  • Figueiras, Fábio G.; Fernandes, J. Ramiro A.; Silva, J. P. B.
  • Journal of Materials Chemistry A, Vol. 7, Issue 17
  • DOI: 10.1039/c8ta09425j

Investigation of ferrimagnetism and ferroelectricity in Al x Fe 2−x O 3 thin films
journal, January 2020

  • Rao, Badari Narayana; Yasui, Shintaro; Katayama, Tsukasa
  • Journal of Materials Chemistry C, Vol. 8, Issue 2
  • DOI: 10.1039/c9tc05390e

Quantification of in-contact probe-sample electrostatic forces with dynamic atomic force microscopy
journal, January 2017


Effect of epitaxial strain and vacancies on the ferroelectric-like response of CaTiO 3 thin films
journal, October 2018

  • Sarantopoulos, A.; Ong, Wee-Liat; Malen, Jonathan A.
  • Applied Physics Letters, Vol. 113, Issue 18
  • DOI: 10.1063/1.5053857

Electroresistance of Pt/BaTiO 3 /LaNiO 3 ferroelectric tunnel junctions and its dependence on BaTiO 3 thickness
journal, January 2019


Determination of ferroelectric contributions to electromechanical response by frequency dependent piezoresponse force microscopy
journal, July 2016

  • Seol, Daehee; Park, Seongjae; Varenyk, Olexandr V.
  • Scientific Reports, Vol. 6, Issue 1
  • DOI: 10.1038/srep30579

Accurate electromechanical characterization of soft molecular monolayers using piezo force microscopy
journal, January 2019

  • Miller, Nathaniel C.; Grimm, Haley M.; Horne, W. Seth
  • Nanoscale Advances, Vol. 1, Issue 12
  • DOI: 10.1039/c9na00638a

Ferroelectricity and piezoelectricity in soft biological tissue: Porcine aortic walls revisited
journal, September 2017

  • Lenz, Thomas; Hummel, Regina; Katsouras, Ilias
  • Applied Physics Letters, Vol. 111, Issue 13
  • DOI: 10.1063/1.4998228

A new technique based on current measurement for nanoscale ferroelectricity assessment: Nano-positive up negative down
journal, February 2017

  • Martin, Simon; Baboux, Nicolas; Albertini, David
  • Review of Scientific Instruments, Vol. 88, Issue 2
  • DOI: 10.1063/1.4974953

Scaling Effects in Perovskite Ferroelectrics: Fundamental Limits and Process-Structure-Property Relations
journal, July 2016

  • Ihlefeld, Jon F.; Harris, David T.; Keech, Ryan
  • Journal of the American Ceramic Society, Vol. 99, Issue 8
  • DOI: 10.1111/jace.14387

Ion movement in thin Nafion films under an applied electric field
journal, September 2018

  • Dugger, Jason W.; Collins, Liam; Welbourn, Rebecca J. L.
  • Applied Physics Letters, Vol. 113, Issue 11
  • DOI: 10.1063/1.5042211

Ionic Gating of Ultrathin and Leaky Ferroelectrics
journal, January 2019

  • Sharma, Yogesh; Wong, Anthony T.; Herklotz, Andreas
  • Advanced Materials Interfaces, Vol. 6, Issue 5
  • DOI: 10.1002/admi.201801723

Phase-field simulations of surface charge-induced polarization switching
journal, March 2019

  • Liu, Di; Zhao, Ru; Jafri, Hasnain Mehdi
  • Applied Physics Letters, Vol. 114, Issue 11
  • DOI: 10.1063/1.5083126

The influence of the local oxygen vacancy concentration on the piezoresponse of strontium titanate thin films
text, January 2015


Aligning in-plane polarization multiplies piezoresponse in P(VDF-TrFE) films on graphite
text, January 2018


Ferroelectric or non-ferroelectric: why so many materials exhibit ferroelectricity on the nanoscale
preprint, January 2017


Giant Electroresistance in Ferroionic Tunnel Junctions
journal, June 2019


Tunable Ferroelectricity in Ruddlesden–Popper Halide Perovskites
journal, March 2019

  • Zhang, Qiannan; Solanki, Ankur; Parida, Kaushik
  • ACS Applied Materials & Interfaces, Vol. 11, Issue 14
  • DOI: 10.1021/acsami.8b21579

Direct observation of room-temperature out-of-plane ferroelectricity and tunneling electroresistance at the two-dimensional limit
journal, August 2018


Converse flexoelectricity yields large piezoresponse force microscopy signals in non-piezoelectric materials
journal, March 2019


Piezoresponse force microscopy and nanoferroic phenomena
journal, April 2019


Room temperature ferroelectricity in fluoroperovskite thin films
journal, August 2017