Abstract:
Iron borate (FeBO3) evidences a magneto-optic effect of device interest over a broad frequency range including parts of the visible spectrum. Modulators and isolators, either continuous or pulsed, may be operated over this entire frequency range at room temperature.
Abstract:
The disclosure describes a structure useful for isolated magnetic domain devices. The structure is a composite of samarium-rich orthoferrite and samarium-poor orthoferrite one of which is epitaxially deposited on the other. The result is that the epitaxial layer is magnetically isolated from the substrate since in these materials the crystallographic direction of net magnetic moment is 90* apart.
Abstract:
This discovery of a system of materials exhibiting ferrimagnetic and semiconducting properties at room temperature, makes possible the development of classes of devices not previously realizable in the absence of refrigeration. These materials in polycrystalline and single-crystal form find application in such devices as optically modulated magnetic devices, microwave amplifiers with built-in isolation and memory elements with built-in gain.