| CPC G11B 7/24 (2013.01) | 25 Claims |

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1. A method for storage of information, comprising:
providing a ceramic substrate; and
creating a plurality of recesses in a surface of the ceramic substrate by using a laser and/or a focused particle beam in order to encode information on the ceramic substrate,
wherein the plurality of recesses have different depths, and
wherein each depth corresponds to a predefined bit of information.
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