Title :
A scanning laser microscope system to observe static and dynamic magnetic domain behaviour
Author :
Clegg, Warwick ; Jenkins, David ; He, Lianna ; Windmill, James ; Fry, Nick
Author_Institution :
Centre for Res. in Inf. Storage Technol., Plymouth Univ., UK
Abstract :
A scanning laser microscope has been designed to observe the dynamic behaviour of domain switching during the thermo-magnetic write process and the subsequent magnetisation state (domain orientation) in thin-films and devices. It will also be used to write to magneto-optic (MO) disk material thermo-magnetically prior to imaging. Images are derived from the longitudinal and polar magneto-optic Kerr effects, which are wavelength dependent, using the appropriate laser wavelength. In this paper the different configurations for imaging are described, and some initial images are presented
Keywords :
Kerr magneto-optical effect; magnetic variables measurement; magnetisation; measurement by laser beam; optical microscopes; thermomagnetic effects; domain orientation; domain switching; dynamic magnetic domain; longitudinal Kerr effects; magnetisation state; magneto-optic disk; polar magneto-optic Kerr effect; scanning laser microscope; thermo-magnetic write process; thin-film devices; thin-films; Kerr effect; Magnetic force microscopy; Magnetic materials; Magnetic switching; Magnetization; Magnetooptic devices; Magnetooptic effects; Optical design; Optical materials; Thin films;
Conference_Titel :
Instrumentation and Measurement Technology Conference, 2000. IMTC 2000. Proceedings of the 17th IEEE
Conference_Location :
Baltimore, MD
Print_ISBN :
0-7803-5890-2
DOI :
10.1109/IMTC.2000.848799
