Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Concept Videos

Magnetic Field due to Moving Charges01:23

Magnetic Field due to Moving Charges

12.6K
A stationary charge creates and interacts with the electric field, while a moving charge creates a magnetic field.
Consider a point charge moving with a constant velocity. Like the electric field, the magnetic field at any point is directly proportional to the magnitude of the charge and inversely proportional to the square of the distance between the source point and the field point. However, unlike the electric field, the magnetic field is always perpendicular to the plane containing the line...
12.6K
Diamagnetism01:26

Diamagnetism

3.5K
Materials consisting of paired electrons have zero net magnetic moments. However, when these materials are placed under an external magnetic field, the moments opposite to the field are induced. Such materials are called diamagnets. Diamagnetism is the response of the diamagnets when placed in an external magnetic field.
Diamagnetism was discovered by Anton Brugmans in 1778 when he observed that bismuth gets repelled by magnetic fields, thus theorizing that diamagnets get repelled by magnets....
3.5K
Potential Due to a Magnetized Object01:24

Potential Due to a Magnetized Object

895
Magnetic dipoles in magnetic materials are aligned when placed under an external magnetic field. For paramagnets and ferromagnets, dipole alignment occurs in the direction of the magnetic field. However, the dipoles align opposite to the field in the case of diamagnets. This state of magnetic polarization due to the external field is called magnetization. Magnetization is defined as the dipole moment per unit volume. It plays a similar role to polarization in electrostatics.
The vector...
895
Atomic Nuclei: Nuclear Magnetic Moment00:59

Atomic Nuclei: Nuclear Magnetic Moment

3.6K
All atomic nuclei are positively charged. When they have a nonzero spin, they behave like rotating charges. As a consequence of their charge and spin, these nuclei generate a magnetic field (B). This, in turn, gives rise to a magnetic moment (μ), which is randomly oriented in the absence of an external magnetic field. When an external magnetic field (B0) is applied, the magnetic moment vectors can align with the field or against it in 2 + 1 orientations. A hydrogen nucleus, which is just a...
3.6K
Ferromagnetism01:31

Ferromagnetism

3.6K
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...
3.6K
Magnetic Field Of A Current Loop01:16

Magnetic Field Of A Current Loop

7.1K
Consider a circular loop with a radius a, that carries a current I. The magnetic field due to the current at an arbitrary point P along the axis of the loop can be calculated using the Biot-Savart law.
7.1K

You might also read

Related Articles

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

Sort by
Same author

Wafer-Scale Self-Limiting Epitaxy of Bernal-Stacked Single-Crystal Boron Nitride.

Small (Weinheim an der Bergstrasse, Germany)·2026
Same author

Development and Diagnostic Validation of an Automated Rapid Testing Platform for Serum Lysophosphatidylcholine as a Sepsis Biomarker.

Annals of laboratory medicine·2026
Same author

Magnetic Skyrmion Neurons with Homeostasis for Spiking Neural Networks.

ACS nano·2025
Same author

CMIT/MIT produces mitochondrial ROS via inhibiting mitochondrial complex I and II.

Free radical biology & medicine·2025
Same author

Photothermal skyrmion tweezer: programmable optical manipulation of magnetic topological quasiparticles.

Nature communications·2025
Same author

Chiral Acoustic Phonon and Conservation of Pseudoangular Momentum in α-Quartz.

Advanced materials (Deerfield Beach, Fla.)·2025

Related Experiment Video

Updated: Apr 16, 2026

Gradient Echo Quantum Memory in Warm Atomic Vapor
10:00

Gradient Echo Quantum Memory in Warm Atomic Vapor

Published on: November 11, 2013

13.3K

Magnetic bubblecade memory based on chiral domain walls.

Kyoung-Woong Moon1, Duck-Ho Kim2, Sang-Cheol Yoo3

  • 1Center for Nanometrology, Korea Research Institute of Standards and Science, Daejeon 305-340, Republic of Korea.

Scientific Reports
|March 17, 2015
PubMed
Summary

Researchers demonstrate a new method for controlling magnetic domain walls using chiral domain walls and alternating magnetic fields. This breakthrough enables unidirectional motion without electric currents or structural changes, paving the way for advanced memory devices.

More Related Videos

Optimizing Magnetic Force Microscopy Resolution and Sensitivity to Visualize Nanoscale Magnetic Domains
07:42

Optimizing Magnetic Force Microscopy Resolution and Sensitivity to Visualize Nanoscale Magnetic Domains

Published on: July 20, 2022

3.6K
A Paired Bead and Magnet Array for Molding Microwells with Variable Concave Geometries
11:42

A Paired Bead and Magnet Array for Molding Microwells with Variable Concave Geometries

Published on: January 28, 2018

9.3K

Related Experiment Videos

Last Updated: Apr 16, 2026

Gradient Echo Quantum Memory in Warm Atomic Vapor
10:00

Gradient Echo Quantum Memory in Warm Atomic Vapor

Published on: November 11, 2013

13.3K
Optimizing Magnetic Force Microscopy Resolution and Sensitivity to Visualize Nanoscale Magnetic Domains
07:42

Optimizing Magnetic Force Microscopy Resolution and Sensitivity to Visualize Nanoscale Magnetic Domains

Published on: July 20, 2022

3.6K
A Paired Bead and Magnet Array for Molding Microwells with Variable Concave Geometries
11:42

A Paired Bead and Magnet Array for Molding Microwells with Variable Concave Geometries

Published on: January 28, 2018

9.3K

Area of Science:

  • Spintronics
  • Materials Science
  • Nanotechnology

Background:

  • Unidirectional motion of magnetic domain walls is crucial for advanced memory and logic devices.
  • Current methods rely on high electric currents or complex structural modifications.

Purpose of the Study:

  • To demonstrate a novel scheme for achieving unidirectional magnetic domain wall motion.
  • To explore the potential of chiral domain walls for device applications.

Main Methods:

  • Utilizing the inherent asymmetry in the speed of chiral domain walls with respect to magnetic fields.
  • Applying an alternating magnetic field to induce coherent unidirectional motion.

Main Results:

  • Demonstrated current-free and structure-free unidirectional motion of magnetic domain walls.
  • Achieved coherent motion in an array of magnetic bubble domains.
  • Enabled a new device prototype: magnetic bubblecade memory for 2D data storage.

Conclusions:

  • Chiral domain walls offer a new paradigm for domain wall manipulation.
  • The proposed method provides a simpler and more efficient approach for spintronic devices.
  • Magnetic bubblecade memory demonstrates potential for high-density, two-dimensional data storage.