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

Atomic Nuclei: Nuclear Relaxation Processes01:23

Atomic Nuclei: Nuclear Relaxation Processes

In the absence of an external magnetic field, nuclear spin states are degenerate and randomly oriented. When a magnetic field is applied, the spins begin to precess and orient themselves along (lower energy) or against (higher energy) the direction of the field. At equilibrium, a slight excess population of spins exists in the lower energy state. Because the direction of the magnetic field is fixed as the z-axis,  the precessing magnetic moments are randomly oriented around the z-axis. This...
Ferromagnetism01:31

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...
Magnetic Fields01:27

Magnetic Fields

A moving charge or a current creates a magnetic field in the surrounding space, in addition to its electric field. The magnetic field exerts a force on any other moving charge or current that is present in the field. Like an electric field, the magnetic field is also a vector field. At any position, the direction of the magnetic field is defined as the direction in which the north pole of a compass needle points.
A magnetic field is defined by the force that a charged particle experiences...
Atomic Nuclei: Magnetic Resonance01:05

Atomic Nuclei: Magnetic Resonance

The number of nuclear spins aligned in the lower energy state is slightly greater than those in the higher energy state. In the presence of an external magnetic field, as the spins precess at the Larmor frequency, the excess population results in a net magnetization oriented along the z axis. When a pulse or a short burst of radio waves at the Larmor frequency is applied along the x axis, the coupling of frequencies causes resonance and flips the nuclear spins of the excess population from the...
Diamagnetism01:26

Diamagnetism

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.
Atomic Nuclei: Nuclear Spin State Overview01:03

Atomic Nuclei: Nuclear Spin State Overview

NMR-active nuclei have energy levels called 'spin states' that are associated with the orientations of their nuclear magnetic moments. In the absence of a magnetic field, the nuclear magnetic moments are randomly oriented, and the spin states are degenerate. When an external magnetic field is applied, the spin states have only 2 + 1 orientations available to them. A proton with = ½ has two available orientations. Similarly, for a quadrupolar nucleus with a nuclear spin value of one, the...

You might also read

Related Articles

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

Sort by
Same author

Polarization-controlled orbital angular momentum of light passing through a cholesteric spherulite.

Optics letters·2025
Same author

Structural and electronic changes in the Ni<sub>13</sub>@Ag<sub>42</sub> nanoparticle under surface oxidation: the role of silver coating.

Physical chemistry chemical physics : PCCP·2024
Same author

Pair interaction of localized topological structures in confined chiral media.

Physical review. E·2023
Same author

IgE-mediated Allergy to Pembrolizumab and Successful Desensitization.

Journal of investigational allergology & clinical immunology·2022
Same author

The Lights and the Shadows of Controlled Sting Challenge With Hymenoptera.

Journal of investigational allergology & clinical immunology·2022
Same author

Nanoplastics are bioaccumulated in fish liver and muscle and cause DNA damage after a chronic exposure.

Environmental research·2022

Related Experiment Video

Updated: May 30, 2026

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

The magnetization reversal process in spin spring magnets.

V M Uzdin1, A Vega

  • 1St Petersburg State University, Universitetskaya naberezhenaja 7/9, St Petersburg, 199178, Russia.

Nanotechnology
|August 11, 2011
PubMed
Summary
This summary is machine-generated.

This study uses electronic structure calculations to explain soft magnetic film behavior in spring magnets under external magnetic fields. Findings reveal critical field intensity for spiral formation depends on film thickness and field orientation.

More Related Videos

High-Temperature and High-Pressure In situ Magic Angle Spinning Nuclear Magnetic Resonance Spectroscopy
08:55

High-Temperature and High-Pressure In situ Magic Angle Spinning Nuclear Magnetic Resonance Spectroscopy

Published on: October 9, 2020

Related Experiment Videos

Last Updated: May 30, 2026

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

High-Temperature and High-Pressure In situ Magic Angle Spinning Nuclear Magnetic Resonance Spectroscopy
08:55

High-Temperature and High-Pressure In situ Magic Angle Spinning Nuclear Magnetic Resonance Spectroscopy

Published on: October 9, 2020

Area of Science:

  • Condensed Matter Physics
  • Materials Science
  • Computational Physics

Background:

  • Soft magnetic films are crucial components in spring magnets.
  • Understanding their behavior under external magnetic fields is essential for device optimization.
  • Existing models often rely on phenomenological approaches.

Purpose of the Study:

  • To theoretically describe the behavior of soft magnetic films in spring magnets.
  • To investigate the influence of external magnetic field intensity and orientation.
  • To explore the onset of non-collinear spiral formation.

Main Methods:

  • Utilizing spin-polarized non-collinear electronic structure calculations.
  • Analyzing the dependence of critical magnetic field intensity on film thickness.
  • Examining the effect of field orientation on magnetic structure.

Main Results:

  • The critical external magnetic field intensity for non-collinear spiral formation is dependent on soft magnetic phase thickness.
  • Field orientation significantly influences the onset and nature of spiral formation.
  • Spin spiral structures exhibit a change in chirality when subjected to rotating magnetic fields.

Conclusions:

  • The theoretical framework accurately describes experimentally observed phenomena in soft magnetic films.
  • This approach provides new avenues for studying magnetic nanostructures beyond traditional models.
  • The findings offer insights for designing and manipulating magnetic materials in advanced applications.