The fundamentals and applications of ferroelectric HfO2

U Schroeder, MH Park, T Mikolajick… - Nature Reviews …, 2022 - nature.com
Since the first report of ferroelectricity in a Si-doped HfO2 film in 2011, HfO2-based materials
have attracted much interest from the ferroelectric materials and devices community …

Hafnium Oxide (HfO2) – A Multifunctional Oxide: A Review on the Prospect and Challenges of Hafnium Oxide in Resistive Switching and Ferroelectric Memories

W Banerjee, A Kashir, S Kamba - Small, 2022 - Wiley Online Library
Hafnium oxide (HfO2) is one of the mature high‐k dielectrics that has been standing strong
in the memory arena over the last two decades. Its dielectric properties have been …

Scale-free ferroelectricity induced by flat phonon bands in HfO2

HJ Lee, M Lee, K Lee, J Jo, H Yang, Y Kim, SC Chae… - Science, 2020 - science.org
Discovery of robust yet reversibly switchable electric dipoles at reduced dimensions is
critical to the advancement of nanoelectronics devices. Energy bands flat in momentum …

Reversible transition between the polar and antipolar phases and its implications for wake-up and fatigue in HfO2-based ferroelectric thin film

Y Cheng, Z Gao, KH Ye, HW Park, Y Zheng… - Nature …, 2022 - nature.com
Atomic-resolution Cs-corrected scanning transmission electron microscopy revealed local
shifting of two oxygen positions (OI and OII) within the unit cells of a ferroelectric (Hf0. 5Zr0 …

[HTML][HTML] Many routes to ferroelectric HfO2: A review of current deposition methods

HA Hsain, Y Lee, M Materano, T Mittmann… - Journal of Vacuum …, 2022 - pubs.aip.org
Although 10 years have passed since the initial report of ferroelectricity in hafnia (HfO 2),
researchers are still intensely fascinated by this material system and the promise it holds for …

Defects and aliovalent doping engineering in electroceramics

Y Feng, J Wu, Q Chi, W Li, Y Yu, W Fei - Chemical reviews, 2020 - ACS Publications
Since the positive influences of defects on the performance of electroceramics were
discovered, investigations concerning on defects and aliovalent doping routes have grown …

Lanthanum-doped hafnium oxide: a robust ferroelectric material

U Schroeder, C Richter, MH Park, T Schenk… - Inorganic …, 2018 - ACS Publications
Recently simulation groups have reported the lanthanide series elements as the dopants
that have the strongest effect on the stabilization of the ferroelectric non-centrosymmetric …

Roadmap on ferroelectric hafnia-and zirconia-based materials and devices

JPB Silva, R Alcala, UE Avci, N Barrett, L Bégon-Lours… - APL Materials, 2023 - pubs.aip.org
Ferroelectric hafnium and zirconium oxides have undergone rapid scientific development
over the last decade, pushing them to the forefront of ultralow-power electronic systems …

Lessons from hafnium dioxide-based ferroelectrics

B Noheda, P Nukala, M Acuautla - Nature Materials, 2023 - nature.com
A bit more than a decade after the first report of ferroelectric switching in hafnium dioxide-
based ultrathin layers, this family of materials continues to elicit interest. There is ample …

Origin of Ferroelectric Phase in Undoped HfO2 Films Deposited by Sputtering

T Mittmann, M Materano, PD Lomenzo… - Advanced Materials …, 2019 - Wiley Online Library
Thin film metal–insulator–metal capacitors with undoped HfO2 as the insulator are
fabricated by sputtering from ceramic targets and subsequently annealed. The influence of …