By Topic

Incoherent Rotation and Domain Wall Collision in Rectangular Thin Magnetic Films

Sign In

Cookies must be enabled to login.After enabling cookies , please use refresh or reload or ctrl+f5 on the browser for the login options.

Formats Non-Member Member
$31 $13
Learn how you can qualify for the best price for this item!
Become an IEEE Member or Subscribe to
IEEE Xplore for exclusive pricing!
close button

puzzle piece

IEEE membership options for an individual and IEEE Xplore subscriptions for an organization offer the most affordable access to essential journal articles, conference papers, standards, eBooks, and eLearning courses.

Learn more about:

IEEE membership

IEEE Xplore subscriptions

2 Author(s)
Prabhakar, A. ; Dept. of Electr. Eng., Indian Inst. of Technol. Madras, Chennai ; Ranvah, N.

The magnetization dynamics of a rectangular magnetic thin film are studied using micromagnetic simulations. The film is excited by an inplane external magnetic field that is perpendicular to the easy axis. The dynamics that govern the rotation of the magnetization were extracted assuming quasistatic equilibrium before the external field was changed. The power spectral density (PSD) of the time series, spatially averaged over the sensor geometry, reveal the existence of a fundamental precession frequency and an upper sideband. At a critical angle of rotation, the collision of edge domains causes the excitation of spin waves which appear as multiple peaks in the PSD. The process of collision and formation of domain walls causes the central portion of the sensor to switch abruptly between horizontal and vertical directions. The distance between the domain walls before collision becomes a measure of the quiescent state stability of the sensor. We also observe wall displacement waves along the edges of the domains using temporal snapshots of the precession frequency within a micromagnetic cell

Published in:

Magnetics, IEEE Transactions on  (Volume:43 ,  Issue: 6 )