Related Experiment Video
Updated: Jul 7, 2026

Scanning SQUID Study of Vortex Manipulation by Local Contact
Published on: February 1, 2017
Minimum field strength in precessional magnetization reversal
Back1, Allenspach, Weber
1Laboratorium fur Festkorperphysik, ETH Zurich, CH-8093 Zurich, Switzerland. IBM Research Division, Zurich Research Laboratory, CH-8803 Ruschlikon, Switzerland. IBM Research Division, Almaden Research Center, 650 Harry Road, San Jose, CA.
Abstract:
Ultrafast magnetic field pulses as short as 2 picoseconds are able to reverse the magnetization in thin, in-plane, magnetized cobalt films. The field pulses are applied in the plane of the film, and their direction encompasses all angles with the magnetization. At a right angle to the magnetization, maximum torque is exerted on the spins. In this geometry, a precessional magnetization reversal can be triggered by fields as small as 184 kiloamperes per meter. Applications in future ultrafast magnetic recording schemes can be foreseen.
More Related Videos
09:43Optimized Setup and Protocol for Magnetic Domain Imaging with In Situ Hysteresis Measurement
Published on: November 7, 2017
09:38Fabrication Procedures and Birefringence Measurements for Designing Magnetically Responsive Lanthanide Ion Chelating Phospholipid Assemblies
Published on: January 3, 2018
Related Concept Videos
Atomic Nuclei: Larmor Precession Frequency
Atomic Nuclei: Nuclear Relaxation Processes
Magnetic Fields
A magnetic field is defined by the force that a charged particle experiences...
Magnetic Field Due To A Thin Straight Wire
Magnetic Field Of A Current Loop
Magnetic Field due to Moving Charges
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...