Crystallized Domain Walls in HfO2 Enable Chessboard‐Type Ultra‐High‐Dense Ferroelectric Memory
Pawan Kumar, Hyun‐Jae Lee, Yungyeom Kim, Jihoon Choi, Jun Hee Lee · 2026
Read Crystallized Domain Walls in HfO2 Enable Chessboard‐Type Ultra‐High‐Dense Ferroelectric Memory by Pawan Kumar, Hyun‐Jae Lee, Yungyeom Kim, Jihoon Choi, Jun Hee Lee (2026) in the Tower of Babel, a free online library of public-domain works preserved in clean, searchable text. No sign-up. The full text is served as a plain-text file at a predictable URL, where text is present: https://antarctic-labs.com/tower-of-babel/pmc-13572862.txt.
Description
Pawan Kumar and four co-authors reported in 2026 that domain walls in hafnium oxide can freeze into sharp, crystal-like structures of their own. In most ferroelectrics, walls between opposing domains sprawl across several unit cells at high energy cost. In this material the walls sit within about one cell, in low-symmetry shapes with low energy. Some shapes match observed structures; others are new predictions.
The sharp walls pen in tiny square domains under a square nanometer in size, held apart by strong energy barriers. Packed like a chessboard, such domains could store about 400 trillion bits per square centimeter. Odd behaviors like sluggish wall motion fit this picture of walls as stable phases. The authors say the finding recasts walls as building blocks for denser memory. The route also promises lower operating voltages in standard chip processes.
Catalog record
| CREATOR | Pawan Kumar, Hyun‐Jae Lee, Yungyeom Kim, Jihoon Choi, Jun Hee Lee |
|---|---|
| YEAR | 2026 |
| COLLECTION | PAPERS |
| FORMAT | TXT |
| FILE SIZE | 35 KB |
| VERSION | 1.0 |
| LICENSE | CC BY 4.0 |
| RIGHTS | CC BY |
| SOURCE | Europe PMC |