Abstract
Multitrack readout using the magnetooptic Faraday effect in garnet films has improved the density of information. The garnet films are Bi-substituted YIG samples that can resolve down to about 2 mu m/sup 2/. A double garnet layer has been used to improve the interaction between the garnet and the magnetic tape. The first layer has its magnetization parallel to the plane of the film, while the outer layer's is perpendicular. The contribution of the first layer allows better guiding of the field lines of the magnetic tape. This can be understood in terms of the mirror effect, whereby the system consisting of the tape and the double layer is equivalent to a single layer (perpendicular) twice as thick that is coupled twice to the magnetic tape. It is found that the best configuration for the in-plane film is a flux-closure-domain configuration, because its anisotropy constant is much lower than that of the perpendicular layer.< <ETX xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">></ETX>
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
