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

Comparative analysis of the postoperative effectiveness of different splenic artery aneurysm embolization techniques.

Frontiers in cardiovascular medicine·2026

Same author

[Frontiers in direct compression technology for traditional Chinese medicine powder: integration of excipient modification, particle design, and continuous manufacturing].

Zhongguo Zhong yao za zhi = Zhongguo zhongyao zazhi = China journal of Chinese materia medica·2026

Same author

Frailty index and type 2 diabetes with renal complications: insights from Mendelian randomization and retrospective observational study.

Renal failure·2026

Same author

DiffDR: A Diffusion-based Deep Learning Framework for Accurate Drug Response Imputation and Feature Selection.

Current drug targets·2026

Same author

Targeting the SARM1-cADPR-Ca<sup>2+</sup> pathway attenuates mitochondrial fragmentation and osteoarthritis progression.

Arthritis research & therapy·2026

Same author

Transcriptomics and Proteomics Reveals the Glycogen and Lipid Metabolism Regulating Glycogen Level in Mantle of Jinjiang Oyster (Crassostrea ariakensis).

Marine biotechnology (New York, N.Y.)·2026

Search research articles

Related Experiment Video

Updated: Jul 31, 2025

Demonstration of Spin-Multiplexed and Direction-Multiplexed All-Dielectric Visible Metaholograms

Demonstration of Spin-Multiplexed and Direction-Multiplexed All-Dielectric Visible Metaholograms

Published on: September 25, 2020

Magnetically tunable diffractive optical elements based on ion-irradiated ultrathin ferromagnetic stacks.

Xiaolin Huang, Siyuan Jiang, Biao Wu

|May 1, 2023

Summary

We developed novel magnetically tunable diffractive optical elements (DOEs) using ultrathin ferromagnetic Pt/Co stacks. These elements allow magnetic field control of diffraction orders, enabling tunable optical functions for diverse applications.

More Related Videos

Advanced Experimental Methods for Low-temperature Magnetotransport Measurement of Novel Materials

Advanced Experimental Methods for Low-temperature Magnetotransport Measurement of Novel Materials

Published on: January 21, 2016

Fabricating van der Waals Heterostructures with Precise Rotational Alignment

Fabricating van der Waals Heterostructures with Precise Rotational Alignment

Published on: July 5, 2019

Related Experiment Videos

Last Updated: Jul 31, 2025

Demonstration of Spin-Multiplexed and Direction-Multiplexed All-Dielectric Visible Metaholograms

Demonstration of Spin-Multiplexed and Direction-Multiplexed All-Dielectric Visible Metaholograms

Published on: September 25, 2020

Advanced Experimental Methods for Low-temperature Magnetotransport Measurement of Novel Materials

Advanced Experimental Methods for Low-temperature Magnetotransport Measurement of Novel Materials

Published on: January 21, 2016

Fabricating van der Waals Heterostructures with Precise Rotational Alignment

Fabricating van der Waals Heterostructures with Precise Rotational Alignment

Published on: July 5, 2019

Area of Science:

Materials Science
Optics
Spintronics

Background:

Diffractive optical elements (DOEs) offer miniaturization and multifunctionality in optical systems.
Current DOEs often lack dynamic tunability, limiting their adaptive capabilities.
Magneto-optical effects in ferromagnetic materials present opportunities for tunable optical devices.

Purpose of the Study:

To introduce a novel magnetically tunable diffractive optical element (DOE).
To demonstrate the spatial modulation of magnetic properties for optical control.
To explore the application of magneto-optical effects in tunable DOEs.

Main Methods:

Fabrication of ultrathin ferromagnetic (FM) Pt/Co stacks.
Spatially selective Ar+ ion irradiation to modulate perpendicular anisotropy.
Development and testing of a diffraction grating and a Fresnel zone plate (FZP).
Characterization of magnetic field manipulation of diffraction orders.

Main Results:

Successful development of magnetically tunable diffraction grating and FZP.
Demonstration of simultaneous control over zeroth and first diffraction orders using an external magnetic field.
Validation of the magneto-optical effect for tuning DOE performance.
Ability to enhance or hide images formed by the FZP.

Conclusions:

This work presents a new paradigm for compact, high-precision, and dynamically tunable DOEs.
The proposed technology offers fast and robust tunability via magnetic fields.
Potential applications span various spectral ranges, advancing adaptive optics and optical information processing.