Electromagnetic data storage devices

摘要

The present invention relates to an electromagnetic data storage device comprising a data storage medium including a magnetic material, and a write head including an electromagnetic element operable to generate a magnetic field that impinges on a selected portion of the magnetic material of the data storage medium adjacent the write head, so as to affect the magnetisation direction of the selected portion of magnetic material. The electromagnetic element includes a magnetic structure including a matrix material, and a plurality of magnetic nanoparticles held in the matrix material.