| 摘要 |
A method of manufacturing and using a magneto-optic device is provided in which a non-magnetic substrate material is utilized to support a laminate formed of at least two layers of magnetic material having certain magnetic and optical properties optimized in one layer and certain switching properties optimized in another layer. The laminate layers are exchange-coupled at their interface to permit the propagation of a magnetic domain wall through the interface from the switching optimized layer to the optically optimized layer so that the direction of magnetization and Faraday rotation of the entire multi-layer magnetic material laminate can be reversed through application of an applied external magnetic field having a relatively small threshold value. A modified region of decreased anisotropy material is provided within the switching optimized layer to reduce the switching threshold field for the magneto-optic device to a fraction of the low threshold of the magnetic material of the switching optimized layer. The switching optimized layer is made considerably thinner than the optically optimized layer to prevent the inferior optical properties of the switching optimized layer from interfering with the desired optical properties of the magneto-optic device. The entire magneto-optic device may be formed into an array of individual magnetic post elements having electrical conductors placed within the separations between post elements for generating the applied magnetic fields utilized to switch the direction of magnetization of the individual post elements to generate a display.
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