About cookies on this site Our websites require some cookies to function properly (required). In addition, other cookies may be used with your consent to analyze site usage, improve the user experience and for advertising. For more information, please review your options. By visiting our website, you agree to our processing of information as described in IBM’sprivacy statement. To provide a smooth navigation, your cookie preferences will be shared across the IBM web domains listed here.
Paper
Domain nucleation and wall velocity in magneto-optical amorphous thin films
Abstract
Domain nucleation and growth kinetics were investigated in sputter-deposited amorphous thin films of Tb20.2Fe67.8Co12.0. After magnetically saturating the films, a reverse external field was applied and the specimens were pulse-heated by an excimer laser. During this heat treatment the reversal of the magnetization was observed in-situ using the magneto-optical Kerr effect. In addition the domain nucleation was studied using a polarizing microscope. Combining the nucleation and magnetization reversal measurements the domain wall velocity was determined as a function of temperature at three different applied external fields. The results are discussed with reference to existing models for domain wall motion.