Perpendicular magneto-optical disk as high density storage media

Perpendicular magneto-optical disk as high density storage media 

The reproduction of musical notes or sounds by the new digital recorders known as CD s is not sufficient to discern the notes clearly. In the digital process, the heights of sound peaks and valleys are measured and converted into binary (zero and ones) numbers of bits which in turn are reconverted into waves, and the waves into sound by the audio system. 

In a similar way, the video disk reconverts the signal produced by the Kerr effect on a thin film of an amorphous substance such as Tb-Fe sputtered on a substrate disk made of plastic or glass. The Tb-Fe film functions like a perpendicular magneto-optical memory 

MODERN ASPECTS OF RARE EARTHS AND THEIR COMPLEXES 

The perpendicular magneto-optical disks have gained importance in the world and continue to enjoy a good market. 

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