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

Ferromagnetism01:31

Ferromagnetism

2.9K
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...
2.9K
Torque On A Current Loop In A Magnetic Field01:13

Torque On A Current Loop In A Magnetic Field

5.5K
The most common application of magnetic force on current-carrying wires is in electric motors. These consist of loops of wire, which are placed between the magnets with a magnetic field. When current flows through the loops, the magnetic field applies torque, which causes the shaft to rotate, thus converting electrical energy to mechanical energy.
Consider a rectangular current-carrying loop containing N turns of wire, placed in a uniform magnetic field. The net force on a current-carrying loop...
5.5K
Atomic Nuclei: Nuclear Spin State Overview01:03

Atomic Nuclei: Nuclear Spin State Overview

1.8K
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...
1.8K
Magnetic Force Between Two Parallel Currents01:13

Magnetic Force Between Two Parallel Currents

4.3K
Two long, straight, and parallel current-carrying conductors exert a force of equal magnitude on one another. The direction of the force depends on the current direction in the conductors.
The force exerted by the magnetic field due to the first conductor over a finite length of the second conductor is given as the product of the current in the second conductor and  the vector product of the length vector along the current element and the field due to the first conductor. According to the...
4.3K
MOSFET: Enhancement Mode01:22

MOSFET: Enhancement Mode

682
Enhancement-mode MOSFETs are pivotal components in electronics, distinguished by their capacity to act as highly efficient switches. They are part of the larger family of metal-oxide Semiconductor Field-Effect Transistors (MOSFETs). They are available in two types: p-channel and n-channel, each tailored to specific polarity operations.
In their basic form, enhancement-mode MOSFETs are typically non-conductive when the gate-source voltage (Vgs) is zero. This default 'off' state means no...
682
Force On A Current Loop In A Magnetic Field01:17

Force On A Current Loop In A Magnetic Field

3.9K
Magnetic forces on wires carrying current are most frequently applied in motors. A DC motor is a device that converts electrical energy into mechanical work. In motors, wire loops are enclosed in a magnetic field. When current flows through the loops, the magnetic field applies torque, which causes the shaft to rotate. The direction of the current is reversed once the loop's surface area is lined up with the magnetic field, causing a constant torque on the loop. During the process, commutators...
3.9K

You might also read

Related Articles

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

Sort by
Same author

Preliminary Comparative Analysis of Circulatory Glycosaminoglycan Concentrations and Disaccharide Profiles in Diabetic and Healthy Subjects.

The Eurasian journal of medicine·2026
Same author

Multipolar Orbital Relaxation of the t_{2g} States.

Physical review letters·2026
Same author

Multifunctional device based on a nematic liquid crystal.

Optics express·2026
Same author

Elucidating the formation of 3D interconnected honeycomb-like hollow porous biochar with corrugated internal pore walls from lignin-rich secondary waste biomass.

International journal of biological macromolecules·2026
Same author

Linker-Enabled Self-Nitridation and Multistep Pyrolysis Pathways of Cu-Triazolate MOFs Toward Cu<sub>3</sub>N/Carbon Fibers.

Angewandte Chemie (International ed. in English)·2026
Same author

Robust flat-magnetoresistivity in D0<sub>3</sub>-Fe<sub>3</sub>Ga driven by chiral anomaly.

Nature communications·2026
Same journal

Amorphous High-Entropy Oxides With High-Valent Metal and Oxygen-Vacancy Pairs for Thermally Stable Catalytic Oxidation.

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

H<sub>2</sub>S Self-Supplied Micelles Reverse Tumor-Immune Effector Cells Energy Metabolisms to Boost Breast Cancer Immunotherapy With Microenvironment Normalization.

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

Feed-Draw Printing Enables Monolithically Integrated Flexible Sensors With High Interfacial Toughness and Wide Linear Range.

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

Space-Time Coding Conformal Metasurfaces for Multifrequency Beam Steering and Shaping.

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

3D Printing of Magnetic Soft Materials for Functional Structures and Devices.

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

Photothermal-Activable Artificial Macrophage With Amplified Systemic Antibacterial Responses to Combat Primary and Secondary Infection.

Advanced materials (Deerfield Beach, Fla.)·2026
See all related articles

Related Experiment Video

Updated: Dec 17, 2025

Visualizing Uniaxial-strain Manipulation of Antiferromagnetic Domains in Fe1+YTe Using a Spin-polarized Scanning Tunneling Microscope
09:06

Visualizing Uniaxial-strain Manipulation of Antiferromagnetic Domains in Fe1+YTe Using a Spin-polarized Scanning Tunneling Microscope

Published on: March 24, 2019

8.5K

Bulk Spin Torque-Driven Perpendicular Magnetization Switching in L10 FePt Single Layer.

Meng Tang1, Ka Shen2, Shijie Xu1

  • 1Shanghai Key Laboratory of Special Artificial Microstructure Materials and Technology School of Physics Science and Engineering, Tongji University, Shanghai, 200092, China.

Advanced Materials (Deerfield Beach, Fla.)
|June 30, 2020
PubMed
Summary
This summary is machine-generated.

Electric current enables reversible magnetization switching in L10 FePt magnets by exerting spin torque. This breakthrough advances ultrahigh-density magnetic storage and spin memory devices.

Keywords:
L10 magnetic alloycrystallinityspin-orbit torques

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

3.1K
High-Speed Magnetic Tweezers for Nanomechanical Measurements on Force-Sensitive Elements
08:50

High-Speed Magnetic Tweezers for Nanomechanical Measurements on Force-Sensitive Elements

Published on: May 12, 2023

2.6K

Related Experiment Videos

Last Updated: Dec 17, 2025

Visualizing Uniaxial-strain Manipulation of Antiferromagnetic Domains in Fe1+YTe Using a Spin-polarized Scanning Tunneling Microscope
09:06

Visualizing Uniaxial-strain Manipulation of Antiferromagnetic Domains in Fe1+YTe Using a Spin-polarized Scanning Tunneling Microscope

Published on: March 24, 2019

8.5K
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

3.1K
High-Speed Magnetic Tweezers for Nanomechanical Measurements on Force-Sensitive Elements
08:50

High-Speed Magnetic Tweezers for Nanomechanical Measurements on Force-Sensitive Elements

Published on: May 12, 2023

2.6K

Area of Science:

  • Materials Science
  • Condensed Matter Physics
  • Spintronics

Background:

  • L10 FePt exhibits high perpendicular magnetocrystalline anisotropy, making it suitable for high-capacity magnetic storage.
  • Reversing magnetization in L10 FePt for data encoding is challenging.

Purpose of the Study:

  • To demonstrate reversible magnetization switching in L10 FePt using electric current-induced spin torque.
  • To investigate the factors influencing spin torque efficiency and its origin in L10 FePt.

Main Methods:

  • Experimental investigation of spin torque effects in L10 FePt films of varying thickness and chemical ordering.
  • Manipulation of structural gradients to control spin torque direction.
  • Theoretical calculations to support the role of disorder gradients.

Main Results:

  • Electric current successfully induces significant spin torque for reversible magnetization switching in L10 FePt.
  • Spin torque shows a bulk characteristic, increasing with FePt thickness.
  • Switching efficiency is enhanced by higher chemical ordering and influenced by structural gradients.

Conclusions:

  • Spin torque generated by electric current offers a viable mechanism for magnetic switching in L10 FePt.
  • Structural gradients are identified as the source of symmetry breaking for spin torque generation.
  • This work paves the way for advanced magnetic storage and spin memory devices.