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 …

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 …

Stacking-engineered ferroelectricity in bilayer boron nitride

K Yasuda, X Wang, K Watanabe, T Taniguchi… - Science, 2021 - science.org
Two-dimensional (2D) ferroelectrics with robust polarization down to atomic thicknesses
provide building blocks for functional heterostructures. Experimental realization remains …

Reversible oxygen migration and phase transitions in hafnia-based ferroelectric devices

P Nukala, M Ahmadi, Y Wei, S De Graaf, E Stylianidis… - Science, 2021 - science.org
Unconventional ferroelectricity exhibited by hafnia-based thin films—robust at nanoscale
sizes—presents tremendous opportunities in nanoelectronics. However, the exact nature of …

Emergent ferroelectricity in subnanometer binary oxide films on silicon

SS Cheema, N Shanker, SL Hsu, Y Rho, CH Hsu… - Science, 2022 - science.org
The critical size limit of voltage-switchable electric dipoles has extensive implications for
energy-efficient electronics, underlying the importance of ferroelectric order stabilized at …

Kinetically stabilized ferroelectricity in bulk single-crystalline HfO2:Y

X Xu, FT Huang, Y Qi, S Singh, KM Rabe… - Nature materials, 2021 - nature.com
HfO2, a simple binary oxide, exhibits ultra-scalable ferroelectricity integrable into silicon
technology. This material has a polymorphic nature, with the polar orthorhombic (Pbc 21) …

Progress and future prospects of negative capacitance electronics: A materials perspective

M Hoffmann, S Slesazeck, T Mikolajick - APL Materials, 2021 - pubs.aip.org
Negative capacitance in ferroelectric materials has been suggested as a solution to reduce
the power dissipation of electronics beyond fundamental limits. The discovery of …

Wake‐Up Effect in HfO2‐Based Ferroelectric Films

P Jiang, Q Luo, X Xu, T Gong, P Yuan… - Advanced Electronic …, 2021 - Wiley Online Library
HfO2‐based ferroelectric materials are promising candidates for next‐generation nonvolatile
memories. Since the first report on Si‐doped HfO2 ferroelectric thin film in 2011, it has been …

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 …

Negative differential capacitance in ultrathin ferroelectric hafnia

S Jo, H Lee, DH Choe, JH Kim, YS Lee, O Kwon… - Nature …, 2023 - nature.com
Negative differential capacitance in ferroelectrics, which can be stabilized using a dielectric,
could be used to overcome the limitations of capacitive coupling in electronic devices …