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

Magnetism01:30

Magnetism

6.7K
Magnets are commonly found in everyday objects, such as toys, hangers, elevators, doorbells, and computer devices. Experimentation on these magnets shows that all magnets have two poles: one is labeled north (N) and the other south (S). Magnetic poles repel if they are alike and attract if unlike. Moreover, both poles of a magnet attract unmagnetized pieces of iron.
An individual magnetic pole cannot be isolated. No matter how small, every piece of a magnet contains a north pole and a south...
6.7K
Magnetic Vector Potential01:15

Magnetic Vector Potential

801
In electrostatics, the electric field can be written as the negative gradient of the potential. In magnetostatics, the zero divergence of the magnetic field ensures that the magnetic field can be expressed as the curl of a vector potential. This potential is known as the magnetic vector potential.
Consider an ideal solenoid with n turns per unit length and radius R. If I is the current through the solenoid, the magnetic field inside the solenoid is expressed as the product of vacuum...
801
Magnetostatic Boundary Conditions01:28

Magnetostatic Boundary Conditions

1.1K
An electric field suffers a discontinuity at a surface charge. Similarly, a magnetic field is discontinuous at a surface current. The perpendicular component of a magnetic field is continuous across the interface of two magnetic mediums. In contrast, its parallel component, perpendicular to the current, is discontinuous by the amount equal to the product of the vacuum permeability and the surface current. Like the scalar potential in electrostatics, the vector potential is also continuous...
1.1K
Magnetic Susceptibility and Permeability01:31

Magnetic Susceptibility and Permeability

1.4K
In linear magnetic materials, like paramagnets and diamagnets, magnetization is proportional to the magnetic field intensity. The constant of proportionality, a dimensionless number, is called magnetic susceptibility. The value of the susceptibility depends on the type of material.
When diamagnetic materials are placed under an external magnetic field, the moments opposite to the field are induced. Hence, the susceptibility for diamagnets has a minimal negative value of 10-5–10-6. Since...
1.4K
Paramagnetism01:30

Paramagnetism

2.6K
Paramagnets are materials with unpaired electrons that possess a finite magnetic moment. In the absence of a magnetic field, these moments are randomly oriented, and thus the net moment is zero. Under an external field, a torque acting on the moments tends to align them along the field's direction. However, the random thermal motion of electrons produces a torque opposite to the external field and tries to disorient the moments. These two competing effects align only a few moments along the...
2.6K
Potential Due to a Magnetized Object01:24

Potential Due to a Magnetized Object

359
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...
359

You might also read

Related Articles

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

Sort by
Same author

Interdependence explains how and when crises impact social cohesion.

Communications psychology·2026
Same author

Cognitive computations underlying ritual performance and persistence.

Trends in cognitive sciences·2026
Same author

Magnetically programmable surface acoustic wave filters: device concept and predictive modeling.

Npj spintronics·2026
Same author

Resonant Domain Wall Dynamics in a Three-Dimensional Magnetic Nano Double Helix.

Advanced materials (Deerfield Beach, Fla.)·2026
Same author

Vanishing ordered moment in the frustrated triangular lattice antiferromagnet CuNdO<sub>2</sub>.

npj quantum materials·2026
Same author

Robust magnetic polaron percolation in the antiferromagnetic CMR system EuCd<sub>2</sub>P<sub>2</sub>.

npj quantum materials·2026
Same journal

Vision language models for scientific image analysis: an evaluation highlighting opportunities and challenges.

npj computational materials·2026
Same journal

Cavity control of multiferroic order in single-layer NiI<sub>2</sub>.

npj computational materials·2026
Same journal

Extraction of the self energy and Eliashberg function from angle resolved photoemission spectroscopy using the xARPES code.

npj computational materials·2026
Same journal

Equivariant electronic Hamiltonian prediction with many-body message passing.

npj computational materials·2026
Same journal

Enhancing the efficiency of time-dependent density functional theory calculations of dynamic response properties.

npj computational materials·2026
Same journal

System-conditioned reparameterization of the SCAN functional for accurate bandgaps: from analytical constraints to machine learning.

npj computational materials·2026
See all related articles

Related Experiment Video

Updated: Sep 17, 2025

Advanced Experimental Methods for Low-temperature Magnetotransport Measurement of Novel Materials
10:36

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

Published on: January 21, 2016

10.7K

Virtual experiments in computational magnetism with mag2exp.

Samuel J R Holt1,2, Martin Lang1,2, James C Loudon3

  • 1Max Planck Institute for the Structure and Dynamics of Matter, Hamburg, Germany.

Npj Computational Materials
|July 4, 2025
PubMed
Summary
This summary is machine-generated.

The Python package mag2exp simulates virtual experiments for magnetism research. This tool aids in selecting techniques, optimizing setups, guiding experiments, and interpreting data, offering economic benefits over physical trials.

Keywords:
Computational methodsCondensed-matter physicsFerromagnetismImaging techniquesMicroscopy

More Related Videos

Author Spotlight: Magnetometric Characterization of Intermediates in the Solid-State Electrochemistry of Redox-Active Metal-Organic Frameworks
06:53

Author Spotlight: Magnetometric Characterization of Intermediates in the Solid-State Electrochemistry of Redox-Active Metal-Organic Frameworks

Published on: June 9, 2023

2.1K
Methods of Ex Situ and In Situ Investigations of Structural Transformations: The Case of Crystallization of Metallic Glasses
08:55

Methods of Ex Situ and In Situ Investigations of Structural Transformations: The Case of Crystallization of Metallic Glasses

Published on: June 7, 2018

8.6K

Related Experiment Videos

Last Updated: Sep 17, 2025

Advanced Experimental Methods for Low-temperature Magnetotransport Measurement of Novel Materials
10:36

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

Published on: January 21, 2016

10.7K
Author Spotlight: Magnetometric Characterization of Intermediates in the Solid-State Electrochemistry of Redox-Active Metal-Organic Frameworks
06:53

Author Spotlight: Magnetometric Characterization of Intermediates in the Solid-State Electrochemistry of Redox-Active Metal-Organic Frameworks

Published on: June 9, 2023

2.1K
Methods of Ex Situ and In Situ Investigations of Structural Transformations: The Case of Crystallization of Metallic Glasses
08:55

Methods of Ex Situ and In Situ Investigations of Structural Transformations: The Case of Crystallization of Metallic Glasses

Published on: June 7, 2018

8.6K

Area of Science:

  • Computational physics
  • Materials science
  • Data analysis

Background:

  • Computational magnetism simulations, like micromagnetics, produce spatially resolved vector fields.
  • Experimental techniques (magnetometry, microscopy, reciprocal space) yield comparable observables.
  • Virtual experiments offer economic advantages over physical ones.

Purpose of the Study:

  • Introduce mag2exp, a Python package for virtual magnetism experiments.
  • Enable simulation of experimental measurements from computational magnetic field data.
  • Facilitate economic and efficient scientific exploration.

Main Methods:

  • Developed the mag2exp Python package.
  • Input: Spatially resolved vector field of magnetization.
  • Simulates magnetometry, microscopy, and reciprocal space techniques.

Main Results:

  • Obtains simulated observables comparable to experimental measurements.
  • Demonstrates the utility of virtual experiments for various research stages.
  • Provides a cost-effective alternative to physical experimentation.

Conclusions:

  • mag2exp facilitates virtual experimentation in magnetism research.
  • The package aids in experimental design, setup optimization, and data interpretation.
  • Virtual experiments using mag2exp are economical and efficient.