Skip to main content
U.S. Department of Energy
Office of Scientific and Technical Information

Nonvolatile memory cells from hafnium zirconium oxide ferroelectric tunnel junctions using Nb and NbN electrodes

Journal Article · · Journal of Applied Physics
DOI:https://doi.org/10.1063/5.0191757· OSTI ID:2331264
 [1];  [2];  [3];  [4];  [4];  [5];  [2];  [4]
  1. Sandia National Laboratories (SNL-NM), Albuquerque, NM (United States); Oregon State University, Corvallis, OR (United States); Penn State
  2. University of Virginia, Charlottesville, VA (United States)
  3. Sandia National Laboratories (SNL-NM), Albuquerque, NM (United States); University of Virginia, Charlottesville, VA (United States)
  4. Sandia National Laboratories (SNL-NM), Albuquerque, NM (United States)
  5. Oregon State University, Corvallis, OR (United States)

Ferroelectric tunnel junctions (FTJs) utilizing hafnium zirconium oxide (HZO) have attracted interest as non-volatile memory for microelectronics due to ease of integration into back-end-of-line (BEOL) complementary metal oxide semiconductor fabrication. This work examines asymmetric electrode NbN/HZO/Nb devices with 7 nm thick HZO as FTJs in a memory structure, with an output resistance that can be controlled by read and write voltages. The individual FTJs are measured to have a tunneling electroresistance of 10 during the read state without significant filament conduction formation and reasonable ferroelectric performance. Endurance and remanent polarizations of up to 105 cycles and 20 μC/cm2, respectively, are measured and are shown to be dependent on the cycling voltage. Electrical measurements demonstrate how magnitude of the write pulse can modulate the high state resistance and the read pulse influences both resistance values as well as separation of resistance states. Then, by using two opposite switching FTJ devices in series, a programmable nonvolatile resistor divider is demonstrated. Measurements of these two FTJ unit memory cells show wide applicability to a BEOL microfabrication process for a re-readable, rewritable, and nonvolatile memory cell.

Research Organization:
Pennsylvania State University, University Park, PA (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES); USDOE National Nuclear Security Administration (NNSA)
Grant/Contract Number:
SC0021118; NA0003525
OSTI ID:
2331264
Journal Information:
Journal of Applied Physics, Journal Name: Journal of Applied Physics Journal Issue: 9 Vol. 135; ISSN 0021-8979
Publisher:
American Institute of Physics (AIP)Copyright Statement
Country of Publication:
United States
Language:
English

References (40)

Blocking of Conducting Channels Widens Window for Ferroelectric Resistive Switching in Interface‐Engineered Hf 0.5 Zr 0.5 O 2 Tunnel Devices journal June 2020
Revival of Ferroelectric Memories Based on Emerging Fluorite‐Structured Ferroelectrics journal March 2023
Structural Changes Underlying Field-Cycling Phenomena in Ferroelectric HfO 2 Thin Films journal July 2016
Unraveling Ferroelectric Polarization and Ionic Contributions to Electroresistance in Epitaxial Hf 0.5 Zr 0.5 O 2 Tunnel Junctions journal November 2019
Large Tunnel Electroresistance with Ultrathin Hf0.5Zr0.5O2 Ferroelectric Tunnel Barriers journal May 2021
One Nanometer HfO 2 ‐Based Ferroelectric Tunnel Junctions on Silicon journal September 2021
Impact of Electric Field Pulse Duration on Ferroelectric Hafnium Zirconium Oxide Thin Film Capacitor Endurance journal November 2023
Electric‐Field‐Induced Ferroelectricity in 5%Y‐doped Hf 0.5 Zr 0.5 O 2 : Transformation from the Paraelectric Tetragonal Phase to the Ferroelectric Orthorhombic Phase journal March 2021
Insertion of an Ultrathin Interfacial Aluminum Layer for the Realization of a Hf0.5Zr0.5O2 Ferroelectric Tunnel Junction journal March 2022
Complementary Resistive Switching Using Metal–Ferroelectric–Metal Tunnel Junctions journal February 2019
Reconfigurable Compute-In-Memory on Field-Programmable Ferroelectric Diodes journal September 2022
Polarization and Resistive Switching in Epitaxial 2 nm Hf0.5Zr0.5O2 Tunnel Junctions journal August 2021
Cycling Waveform Dependent Wake-Up and ON/OFF Ratio in Al2O3/Hf0.5Zr0.5O2 Ferroelectric Tunnel Junction Devices journal March 2023
Phase-Exchange-Driven Wake-Up and Fatigue in Ferroelectric Hafnium Zirconium Oxide Films journal May 2020
Nondestructive Readout Complementary Resistive Switches Based on Ferroelectric Tunnel Junctions journal February 2018
Giant Electroresistance of Super-tetragonal BiFeO 3 -Based Ferroelectric Tunnel Junctions journal May 2013
Giant tunnelling electroresistance in metal/ferroelectric/semiconductor tunnel junctions by engineering the Schottky barrier journal May 2017
The fundamentals and applications of ferroelectric HfO2 journal March 2022
Ferroelectricity in hafnium oxide thin films journal September 2011
Wake-up effects in Si-doped hafnium oxide ferroelectric thin films journal November 2013
Evidence for oxygen vacancies movement during wake-up in ferroelectric hafnium oxide journal January 2016
Scaling of electroresistance effect in fully integrated ferroelectric tunnel junctions journal April 2016
Tunneling electroresistance effect in a Pt/Hf 0.5 Zr 0.5 O 2 /Pt structure journal February 2017
Stabilization of ferroelectric phase of Hf 0.58 Zr 0.42 O 2 on NbN at 4 K journal March 2019
Understanding tunneling electroresistance effect through potential profile in Pt/Hf 0.5 Zr 0.5 O 2 /TiN ferroelectric tunnel junction memory journal October 2019
Compositional dependence of crystallization temperatures and phase evolution in hafnia-zirconia (Hf x Zr 1−x )O 2 thin films journal May 2020
Compositional and phase dependence of elastic modulus of crystalline and amorphous Hf 1- x Zr x O 2 thin films journal March 2021
A Perspective on ferroelectricity in hafnium oxide: Mechanisms and considerations regarding its stability and performance journal December 2022
Evidence for ferroelastic switching and nanoscopic domains in polycrystalline Si-doped hafnium oxide films journal July 2023
The effect of the bottom electrode on ferroelectric tunnel junctions based on CMOS-compatible HfO 2 journal June 2018
Data retention and low voltage operation of Al 2 O 3 /Hf 0.5 Zr 0.5 O 2 based ferroelectric tunnel junctions journal July 2020
Magnetic Tunnel Junctions Based on Ferroelectric Hf 0.5 Zr 0.5 O 2 Tunnel Barriers journal September 2019
Giant Electroresistance in Ferroelectric Tunnel Junctions journal June 2005
Dual-Mode Operations of Self-Rectifying Ferroelectric Tunnel Junction Crosspoint Array for High-Density Integration of IoT Devices journal July 2023
A 9-Mb HZO-Based Embedded FeRAM With 10-Cycle Endurance and 5/7-ns Read/Write Using ECC-Assisted Data Refresh and Offset-Canceled Sense Amplifier journal January 2024
Critical Role of Interlayer in Hf 0.5 Zr 0.5 O 2 Ferroelectric FET Nonvolatile Memory Performance journal June 2018
Optimizing Ferroelectric and Interface Layers in HZO-Based FTJs for Neuromorphic Applications journal February 2022
Implementation of high-performance and high-yield nanoscale hafnium zirconium oxide based ferroelectric tunnel junction devices on 300 mm wafer platform journal January 2023
Ferroelectric Devices for Content-Addressable Memory journal December 2022
Recent progress for obtaining the ferroelectric phase in hafnium oxide based films: impact of oxygen and zirconium journal October 2019

Similar Records

Multistate resistance in TaN/(Hf,Zr)O2/Ta ferroelectric tunnel junctions
Journal Article · Mon Apr 14 00:00:00 EDT 2025 · Journal of Applied Physics · OSTI ID:2556922

One Nanometer HfO2-Based Ferroelectric Tunnel Junctions on Silicon
Journal Article · Wed Sep 29 00:00:00 EDT 2021 · Advanced Electronic Materials · OSTI ID:1829205

Related Subjects