Ferroelectric hafnium oxide films for in‐memory computing applications

Z Li, T Wang, J Yu, J Meng, Y Liu, H Zhu… - Advanced Electronic …, 2022 - Wiley Online Library
Traditional von Neumann architecture is facing severe challenges due to separated physical
structure of memory and processing units, which inspires the development of in‐memory …

The origin of ferroelectricity in Hf1− xZrxO2: A computational investigation and a surface energy model

R Materlik, C Künneth, A Kersch - Journal of Applied Physics, 2015 - pubs.aip.org
The structural, thermal, and dielectric properties of the ferroelectric phase of HfO 2, ZrO 2,
and Hf 0.5 Zr 0.5 O 2 (HZO) are investigated with carefully validated density functional …

[HTML][HTML] On the structural origins of ferroelectricity in HfO2 thin films

X Sang, ED Grimley, T Schenk, U Schroeder… - Applied Physics …, 2015 - pubs.aip.org
Here, we present a structural study on the origin of ferroelectricity in Gd doped HfO 2 thin
films. We apply aberration corrected high-angle annular dark-field scanning transmission …

A comprehensive study on the structural evolution of HfO 2 thin films doped with various dopants

MH Park, T Schenk, CM Fancher, ED Grimley… - Journal of Materials …, 2017 - pubs.rsc.org
The origin of the unexpected ferroelectricity in doped HfO2 thin films is now considered to be
the formation of a non-centrosymmetric Pca21 orthorhombic phase. Due to the …

Pathways towards ferroelectricity in hafnia

TD Huan, V Sharma, GA Rossetti Jr, R Ramprasad - Physical Review B, 2014 - APS
The question of whether one can systematically identify (previously unknown) ferroelectric
phases of a given material is addressed, taking hafnia (HfO 2) as an example. Low free …

An overview of ferroelectric hafnia and epitaxial growth

J Cao, S Shi, Y Zhu, J Chen - physica status solidi (RRL)–Rapid …, 2021 - Wiley Online Library
Hafnia thin films have been under intensive research during the past few years due to its
robust ferroelectricity under very thin limit and good compatibility with silicon. The polar …

Rational design of all organic polymer dielectrics

V Sharma, C Wang, RG Lorenzini, R Ma, Q Zhu… - Nature …, 2014 - nature.com
To date, trial and error strategies guided by intuition have dominated the identification of
materials suitable for a specific application. We are entering a data-rich, modelling-driven …

Factors favoring ferroelectricity in hafnia: A first-principles computational study

R Batra, TD Huan, JL Jones, G Rossetti Jr… - The Journal of …, 2017 - ACS Publications
The surprising ferroelectricity displayed by hafnia thin films has been attributed to a
metastable polar orthorhombic (Pca 21) phase. Nevertheless, the conditions under which …

Identification of the nature of traps involved in the field cycling of Hf0. 5Zr0. 5O2-based ferroelectric thin films

DR Islamov, VA Gritsenko, TV Perevalov… - Acta Materialia, 2019 - Elsevier
The discovery of ferroelectricity in hafnium oxide has revived the interest in ferroelectric
memories as a viable option for low power non-volatile memories. However, due to the high …

Stabilizing the ferroelectric phase in HfO 2-based films sputtered from ceramic targets under ambient oxygen

T Mittmann, M Michailow, PD Lomenzo, J Gärtner… - Nanoscale, 2021 - pubs.rsc.org
Thin film metal–insulator–metal capacitors with undoped hafnium oxide and a mixture of
hafnium and zirconium oxides are prepared by sputtering from ceramic targets. The …