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Describes a laser magneto-optic (LAMOM) system used to observe magnetic domains in Permalloy thin-film devices. Methods by which background suppression has been accomplished to obtain high-contrast images of magnetic domains; Description of the LAMOM system; Types of illumination used in the experiment.

Presents a study which investigated the domain response in square and near-square-shaped permalloy films through laser magneto-optic microscope. Process of magnetization between domains of a ferromagnetic body; Behavior of the wall structure in a thick square permalloy film; Discussion on domain magnetization prior to bifurcation.

Presents a study which described a dynamic response behavior of domain walls in the permalloy of thin-film inductive heads. Method of the study; Results and discussion; Conclusion.

Describes a dynamic response behavior of domain walls in the permalloy of thin-film inductive heads. Use of the laser magneto-optic microscope; Information on the direction of the dynamic wall displacements.

Focuses on the proposed laminated Permalloys to increase permeability and reduce wall noise in recording. Microscope used to study inductive-head-yoke shaped elements of Permalloy layers separated by nonmagnetic metallic spacers; Description of the transients seen during the transition from a one-wall to a no-wall state; Explanation for the difference between the coupled states of four-layer elements and two-layer elements.