Search research articles

ABOUT JoVE

Overview Leadership Blog JoVE Help Center

AUTHORS

Publishing Process Editorial Board Scope & Policies Peer Review FAQ Submit

LIBRARIANS

Testimonials Subscriptions Access Resources Library Advisory Board FAQ

RESEARCH

JoVE Journal Methods Collections JoVE Encyclopedia of Experiments Archive

EDUCATION

JoVE Core JoVE Business JoVE Science Education JoVE Lab Manual Faculty Resource Center Faculty Site

Terms & Conditions of Use

Related Concept Videos

Ferromagnetism

Ferromagnetism

Materials like iron, nickel, and cobalt consist of magnetic domains, within which the magnetic dipoles are arranged parallel to each other. The magnetic dipoles are rigidly aligned in the same direction within a domain by quantum mechanical coupling among the atoms. This coupling is so strong that even thermal agitation at room temperature cannot break it. The result is that each domain has a net dipole moment. However, some materials have weaker coupling, and are ferromagnetic at lower...

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by

Same author

Bioprocess Development of a Human Monoclonal Antibody against MERS-CoV: Analytical and Preclinical Studies.

Biomolecules & therapeutics·2026

Same author

Giant Orbital Rashba-Edelstein Effect in Crystalline Cu<sub>2</sub>O/Cu Heterostructures.

Advanced materials (Deerfield Beach, Fla.)·2026

Same author

Broad Neutralizing Activity of Monoclonal Antibodies Against the Omicron Variants Isolated From Patients With Early Severe Acute Respiratory Syndrome Coronavirus-2.

Journal of medical virology·2026

Same author

QStrain: an interactive platform for viral genome analysis and nucleic acid therapeutic design.

BMC bioinformatics·2026

Same author

Emerging roles of POLR2L of RNA polymerase II dynamics and disease mechanisms (Review).

Molecular medicine reports·2026

Same author

Materials- and process-driven microstructural engineering for scalable dry-processed electrode manufacturing.

Materials horizons·2026

Same journal

Engineered Young Brown Adipose Tissue-Derived Exosomes Alleviate Radiation-Induced Lung Injury by Promoting G Protein-Coupled Receptor 183 Ubiquitination.

ACS nano·2026

Same journal

Pore Geometry-Driven Capture of Trace Aromatic Volatile Organic Compounds in Al-Based MOFs.

ACS nano·2026

Same journal

Dual-Bridged Porphyrin-Based Covalent Organic Framework with Integrated Specific Fluorescent Recognition and Cooperative Adsorption Capabilities.

ACS nano·2026

Same journal

Split-Gate Memtransistors for Energy-Efficient Adaptive Reinforcement Learning.

ACS nano·2026

Same journal

Interface Coordination Nucleation of Copper Nanoclusters on Covalent Organic Frameworks for Electrocatalytic Ammonia Synthesis.

ACS nano·2026

Same journal

High-Performance Near-Infrared Quantum Emission from Color Centers in hBN.

ACS nano·2026

See all related articles

Search research articles

Related Experiment Video

Updated: May 6, 2026

A Method for Growing Bio-memristors from Slime Mold

A Method for Growing Bio-memristors from Slime Mold

Published on: November 2, 2017

Highly Reliable Magnetic Memory-Based Physical Unclonable Functions.

Jaimin Kang¹, Donghyeon Han¹, Kyungchul Lee²

¹Department of Material Science and Engineering, Korea Advanced Institute of Science and Technology (KAIST), 291 Daehak-road, Yuseong-gu, Daejeon 34141, Korea.

|May 8, 2024

Summary

This summary is machine-generated.

Researchers developed novel security devices called MRAM-based physical unclonable functions (PUFs) using magnetic random-access memory (MRAM). These MRAM-PUFs demonstrate high reliability and resilience against attacks, paving the way for secure computing applications.

Keywords:

MRAM-PUF magnetic random-access memory magnetic tunnel junction physical unclonable function reliability

More Related Videos

A Fabrication and Measurement Method for a Flexible Ferroelectric Element Based on Van Der Waals Heteroepitaxy

A Fabrication and Measurement Method for a Flexible Ferroelectric Element Based on Van Der Waals Heteroepitaxy

Published on: April 8, 2018

Fabrication of Magnetic Platforms for Micron-Scale Organization of Interconnected Neurons

Fabrication of Magnetic Platforms for Micron-Scale Organization of Interconnected Neurons

Published on: July 14, 2021

Related Experiment Videos

Last Updated: May 6, 2026

A Method for Growing Bio-memristors from Slime Mold

A Method for Growing Bio-memristors from Slime Mold

Published on: November 2, 2017

A Fabrication and Measurement Method for a Flexible Ferroelectric Element Based on Van Der Waals Heteroepitaxy

A Fabrication and Measurement Method for a Flexible Ferroelectric Element Based on Van Der Waals Heteroepitaxy

Published on: April 8, 2018

Fabrication of Magnetic Platforms for Micron-Scale Organization of Interconnected Neurons

Fabrication of Magnetic Platforms for Micron-Scale Organization of Interconnected Neurons

Published on: July 14, 2021

Area of Science:

Materials Science and Engineering
Electrical Engineering
Computer Science and Engineering

Background:

Magnetic random-access memory (MRAM) offers nonvolatile memory with high endurance and commercial viability.
MRAM applications are expanding into novel computing paradigms like in-memory computing and probabilistic bits.
Physical unclonable functions (PUFs) are crucial for hardware security, leveraging unique device characteristics.

Purpose of the Study:

To develop highly reliable MRAM-based physical unclonable functions (PUFs).
To exploit nanoscale perpendicular magnetic tunnel junctions (MTJs) for security applications.
To assess the performance and security robustness of the proposed MRAM-PUF.

Main Methods:

Fabrication of nanoscale perpendicular magnetic tunnel junctions (MTJs).
Intentional randomization of the antiferromagnetically coupled reference layer's magnetization direction.
Rigorous testing of challenge-response pairs (1584 pairs, 64 bits each) across a wide temperature range (-40 to +150 °C).

Main Results:

Successful creation of a novel MRAM-based PUF by randomizing MTJ reference layer magnetization.
Demonstrated ideal uniformity and uniqueness characteristics for the MRAM-PUF.
Maintained high performance over an extended temperature range and confirmed resilience against machine learning attacks.

Conclusions:

MRAM-based PUFs offer a highly reliable and secure solution for hardware security.
The demonstrated performance and resilience, coupled with MRAM's commercial maturity, facilitate MRAM-PUF implementation.
This work enables advanced security features in next-generation computing systems.