Investigating the Electromechanical Behavior of Unconventionally Ferroelectric Hf0.5Zr0.5O2-Based Capacitors Through Operando Nanobeam X-Ray Diffraction
(2023) In Advanced Electronic Materials 9(6).- Abstract
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... (More)
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.
(Less)
- author
- organization
- publishing date
- 2023
- type
- Contribution to journal
- publication status
- published
- subject
- keywords
- electrochemical polarization, first-principles, nanobeam diffraction, rhombohedral Hf Zr O
- in
- Advanced Electronic Materials
- volume
- 9
- issue
- 6
- article number
- 2201298
- publisher
- Wiley-Blackwell
- external identifiers
-
- scopus:85153484870
- ISSN
- 2199-160X
- DOI
- 10.1002/aelm.202201298
- language
- English
- LU publication?
- yes
- id
- 102e86ee-d009-41fe-a770-a4bb1fe6ea71
- date added to LUP
- 2023-07-14 14:01:21
- date last changed
- 2023-07-14 14:01:21
@article{102e86ee-d009-41fe-a770-a4bb1fe6ea71, abstract = {{<p>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 La<sub>0.67</sub>Sr<sub>0.33</sub>MnO<sub>3</sub>/Hf<sub>0.5</sub>Zr<sub>0.5</sub>O<sub>2</sub>/La<sub>0.67</sub>Sr<sub>0.33</sub>MnO<sub>3</sub> 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 (|d<sub>33</sub>|) ≈ 0.5–0.8 pmV<sup>−1</sup>. 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 Hf<sub>0.5</sub>Zr<sub>0.5</sub>O<sub>2</sub> and suggests its (un)correlation with ferroelectric switching.</p>}}, author = {{Stylianidis, Evgenios and Surabhi, Pranav and Hamming-Green, Ruben and Salverda, Mart and Wei, Yingfen and Burema, Arjan and Matzen, Sylvia and Banerjee, Tamalika and Björling, Alexander and Mukherjee, Binayak and Dutta, Sangita and Aramberri, Hugo and Íñiguez, Jorge and Noheda, Beatriz and Carbone, Dina and Nukala, Pavan}}, issn = {{2199-160X}}, keywords = {{electrochemical polarization; first-principles; nanobeam diffraction; rhombohedral Hf Zr O}}, language = {{eng}}, number = {{6}}, publisher = {{Wiley-Blackwell}}, series = {{Advanced Electronic Materials}}, title = {{Investigating the Electromechanical Behavior of Unconventionally Ferroelectric Hf<sub>0.5</sub>Zr<sub>0.5</sub>O<sub>2</sub>-Based Capacitors Through Operando Nanobeam X-Ray Diffraction}}, url = {{http://dx.doi.org/10.1002/aelm.202201298}}, doi = {{10.1002/aelm.202201298}}, volume = {{9}}, year = {{2023}}, }