Abstract
Single-crystal thin films of cobalt-ferrite with large perpendicular anisotropy were grown on MgO substrates. The films are represented by the general formula Co <inf xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">x</inf> Fe <inf xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">3-x</inf> O <inf xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">4</inf> . The flux reversal mechanism, the main magnetic and magnetooptic parameters of these films were studied over the wide composition range. Bit-by-bit and holographic Curie point writing were made on cobalt-ferrite films. The films possess some unique advantages in comparison with MnBi films. Write energy and diffraction efficiency of cobalt-ferrite films were measured and calculated. The films are found to be suitable for magnetooptic memory applications.
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