TY - JOUR
T1 - Investigating the Electromechanical Behavior of Unconventionally Ferroelectric Hf0.5Zr0.5O2-Based Capacitors Through Operando Nanobeam X-Ray Diffraction
AU - Stylianidis, Evgenios
AU - Surabhi, Pranav
AU - Hamming-Green, Ruben
AU - Salverda, Mart
AU - Wei, Yingfen
AU - Burema, Arjan
AU - Matzen, Sylvia
AU - Banerjee, Tamalika
AU - Björling, Alexander
AU - Mukherjee, Binayak
AU - Dutta, Sangita
AU - Aramberri, Hugo
AU - Íñiguez, Jorge
AU - Noheda, Beatriz
AU - Carbone, Dina
AU - Nukala, Pavan
N1 - Funding Information:
The authors acknowledge MAX IV Laboratory for time on Beamline NanoMAX under Proposal 20190954. Research conducted at MAX IV, a Swedish national user facility, was supported by the Swedish Research Council (under contract grant No. 2018—07152), the Swedish Governmental Agency for Innovation Systems (under contract grant No. 2018–04969), and Formas (under contract grant No. 2019–02496). Work at LIST was supported by the Luxembourg National Research Fund though (grant Nos. INTER/NOW/20/15079143/TRICOLOR (to B.M., H.A., J.I.) and PRIDE/15/10935404/MASSENA (to S.D.). P.N. acknowledges national nanofabrication and micro-nano characterization facilities at the center for nanoscience and engineering, IISc. P.N. also acknowledges SERB grant (SRG/000285) and Infosys Young Scientist Award. B.N. and T.B. acknowledge the financial support of the CogniGron research center and the Ubbo Emmius Funds (University of Groningen). Device fabrication were realized using NanoLab NL facilities. S.M. acknowledges the support from the French RENATECH network for the research at the Center for Nanoscience and Nanotechnology.
Funding Information:
The authors acknowledge MAX IV Laboratory for time on Beamline NanoMAX under Proposal 20190954. Research conducted at MAX IV, a Swedish national user facility, was supported by the Swedish Research Council (under contract grant No. 2018—07152), the Swedish Governmental Agency for Innovation Systems (under contract grant No. 2018–04969), and Formas (under contract grant No. 2019–02496). Work at LIST was supported by the Luxembourg National Research Fund though (grant Nos. INTER/NOW/20/15079143/TRICOLOR (to B.M., H.A., J.I.) and PRIDE/15/10935404/MASSENA (to S.D.). P.N. acknowledges national nanofabrication and micro‐nano characterization facilities at the center for nanoscience and engineering, IISc. P.N. also acknowledges SERB grant (SRG/000285) and Infosys Young Scientist Award. B.N. and T.B. acknowledge the financial support of the CogniGron research center and the Ubbo Emmius Funds (University of Groningen). Device fabrication were realized using NanoLab NL facilities. S.M. acknowledges the support from the French RENATECH network for the research at the Center for Nanoscience and Nanotechnology.
Publisher Copyright:
© 2023 The Authors. Advanced Electronic Materials published by Wiley-VCH GmbH.
PY - 2023/6
Y1 - 2023/6
N2 - Understanding various aspects of ferroelectricity in hafnia-based nanomaterials is of vital importance for the development of future nonvolatile memory and logic devices. Here, the unconventional and weak electromechanical response of epitaxial La0.67Sr0.33MnO3/Hf0.5Zr0.5O2/La0.67Sr0.33MnO3 ferroelectric capacitors is investigated, via the sensitivity offered by nanobeam X-ray diffraction experiments during application of electrical bias. It is shown that the pristine rhombohedral phase exhibits a linear piezoelectric effect with piezoelectric coefficient (|d33|) ≈ 0.5–0.8 pmV−1. It is found that the piezoelectric response is suppressed above the coercive voltage. For higher voltages, and with the onset of DC conductivity throughout the capacitor, a second-order effect is observed. The work sheds light into the electromechanical response of rhombohedral Hf0.5Zr0.5O2 and suggests its (un)correlation with ferroelectric switching.
AB - Understanding various aspects of ferroelectricity in hafnia-based nanomaterials is of vital importance for the development of future nonvolatile memory and logic devices. Here, the unconventional and weak electromechanical response of epitaxial La0.67Sr0.33MnO3/Hf0.5Zr0.5O2/La0.67Sr0.33MnO3 ferroelectric capacitors is investigated, via the sensitivity offered by nanobeam X-ray diffraction experiments during application of electrical bias. It is shown that the pristine rhombohedral phase exhibits a linear piezoelectric effect with piezoelectric coefficient (|d33|) ≈ 0.5–0.8 pmV−1. It is found that the piezoelectric response is suppressed above the coercive voltage. For higher voltages, and with the onset of DC conductivity throughout the capacitor, a second-order effect is observed. The work sheds light into the electromechanical response of rhombohedral Hf0.5Zr0.5O2 and suggests its (un)correlation with ferroelectric switching.
KW - electrochemical polarization
KW - first-principles
KW - nanobeam diffraction
KW - rhombohedral Hf Zr O
UR - http://www.scopus.com/inward/record.url?scp=85153484870&partnerID=8YFLogxK
U2 - 10.1002/aelm.202201298
DO - 10.1002/aelm.202201298
M3 - Article
AN - SCOPUS:85153484870
SN - 2199-160X
VL - 9
JO - Advanced electronic materials
JF - Advanced electronic materials
IS - 6
M1 - 2201298
ER -