Process for applying a filter layer to a crystal body

摘要

The invention relates to a method for applying a filter structure (100) to a crystal body (1), in particular a diamond with a number of color centers, in particular nitrogen defects, for a magnetic field sensor device with the following steps: Amorphizing a surface area (10) of the crystal body (1) to which the filter structure (100) is to be applied to provide an amorphous surface area (10), and applying the filter structure (100) to the amorphous surface area (10). The invention also relates to a sensor device having a crystal body (1) on which a filter structure (100) is applied to the crystal body (1) according to this method.